Drawing punches / Dicoat, TiCN, HW

Volume Discount

MISUMI

SKH51
SKD11
POWDER HSS
TiCN
DICOAT
HW

Part Number

Once your search is narrowed to one product,
the corresponding part number is displayed here.

Drawing
3D Preview 3D preview is available after complete configuration
Part Numbers
Catalog

Part Number:

3D preview is not available, because the part number has not yet been determined.

In order to open the 3D preview, the part number must be fixed.

Plug-in is required for 3D Preview

CAD Download

Data to be displayed: 30; 45; 60

1
2
3
4
5
Next >>

Part Number
H-SH2A3-[40-80/0.1]-P[2-3/0.01]-A[1-89/1]-F[10-78.1/0.1]
H-SH2A3-[40-80/0.1]-PC[1-2/0.01]-A[1-89/1]-F[10-78.1/0.1]
H-SH2A4-[40-80/0.1]-P[2-3.99/0.01]-A[1-89/1]-F[10-78.1/0.1]
H-SH2A4-[40-80/0.1]-PC[1-2/0.01]-A[1-89/1]-F[10-78.1/0.1]
H-SH2A5-[40-80/0.1]-P[2-5/0.01]-A[1-89/1]-F[10-78.1/0.1]
H-SH2A5-[40-80/0.1]-PC[1-2/0.01]-A[1-89/1]-F[10-78.1/0.1]
H-SH2A6-[40-80/0.1]-P[2-6/0.01]-A[1-89/1]-F[10-78.1/0.1]
H-SH2A6-[40-80/0.1]-PC[1-2/0.01]-A[1-89/1]-F[10-78.1/0.1]
H-SH2A8-[40-100/0.1]-P[3-8/0.01]-A[1-89/1]-F[10-98.2/0.1]
H-SH2A8-[40-100/0.1]-PC[1.5-3/0.01]-A[1-89/1]-F[10-98.2/0.1]
H-SH2A10-[40-100/0.1]-P[3-10/0.01]-A[1-89/1]-F[10-98.2/0.1]
H-SH2A10-[40-100/0.1]-PC[1.5-3/0.01]-A[1-89/1]-F[10-98.2/0.1]
H-SH2A13-[40-100/0.1]-P[6-13/0.01]-A[1-89/1]-F[10-98.2/0.1]
H-SH2A13-[40-100/0.1]-PC[3-6/0.01]-A[1-89/1]-F[10-98.2/0.1]
H-SH2A16-[40-100/0.1]-P[10-16/0.01]-A[1-89/1]-F[30-99/0.1]
H-SH2A16-[40-100/0.1]-PC[5-9.99/0.01]-A[1-89/1]-F[30-99/0.1]
H-SH2A20-[40-100/0.1]-P[13-20/0.01]-A[1-89/1]-F[30-99/0.1]
H-SH2A20-[40-100/0.1]-PC[6.5-12.99/0.01]-A[1-89/1]-F[30-99/0.1]
H-SH2A25-[40-100/0.1]-P[18-25/0.01]-A[1-89/1]-F[30-99/0.1]
H-SH2A25-[40-100/0.1]-PC[9-17.99/0.01]-A[1-89/1]-F[30-99/0.1]
H-SH2B3-[40-80/0.1]-P[2-3/0.01]-R[0.1-15/0.1]
H-SH2B3-[40-80/0.1]-PC[1-2/0.01]-R[0.1-15/0.1]
H-SH2B4-[40-80/0.1]-P[2-4/0.01]-R[0.1-15/0.1]
H-SH2B4-[40-80/0.1]-PC[1-2/0.01]-R[0.1-15/0.1]
H-SH2B5-[40-80/0.1]-P[2-5/0.01]-R[0.1-15/0.1]
H-SH2B5-[40-80/0.1]-PC[1-1.99/0.01]-R[0.1-15/0.1]
H-SH2B6-[40-80/0.1]-P[2-6/0.01]-R[0.1-15/0.1]
H-SH2B6-[40-80/0.1]-PC[1-2/0.01]-R[0.1-15/0.1]
H-SH2B8-[40-100/0.1]-P[3-8/0.01]-R[0.1-15/0.1]
H-SH2B8-[40-100/0.1]-PC[1.5-3/0.01]-R[0.1-15/0.1]
H-SH2B10-[40-100/0.1]-P[3-10/0.01]-R[0.1-15/0.1]
H-SH2B10-[40-100/0.1]-PC[1.5-3/0.01]-R[0.1-15/0.1]
H-SH2B13-[40-100/0.1]-P[6-13/0.01]-R[0.1-15/0.1]
H-SH2B13-[40-100/0.1]-PC[3-6/0.01]-R[0.1-15/0.1]
H-SH2B16-[40-100/0.1]-P[10-16/0.01]-R[0.1-15/0.1]
H-SH2B16-[40-100/0.1]-PC[5-9.99/0.01]-R[0.1-15/0.1]
H-SH2B20-[40-100/0.1]-P[13-20/0.01]-R[0.1-15/0.1]
H-SH2B20-[40-100/0.1]-PC[6.5-12.99/0.01]-R[0.1-15/0.1]
H-SH2B25-[40-100/0.1]-P[18-25/0.01]-R[0.1-15/0.1]
H-SH2B25-[40-100/0.1]-PC[9-17.99/0.01]-R[0.1-15/0.1]
H-SH2C3-[40-80/0.1]-P[2-3/0.01]-V[1-2.96/0.01]-A[1-89/1]-F[10-78/0.1]-S[1-15/0.1]
H-SH2C3-[40-80/0.1]-PC[1-2/0.01]-V[1-2.96/0.01]-A[1-89/1]-F[10-78/0.1]-S[1-15/0.1]
H-SH2C4-[40-80/0.1]-P[2-4/0.01]-V[1-3.96/0.01]-A[1-89/1]-F[10-78/0.1]-S[1-15/0.1]
H-SH2C4-[40-80/0.1]-PC[1-2/0.01]-V[1-3.96/0.01]-A[1-89/1]-F[10-78/0.1]-S[1-15/0.1]
H-SH2C5-[40-80/0.1]-P[2-5/0.01]-V[1.2-4.96/0.01]-A[1-89/1]-F[10-78/0.1]-S[1-15/0.1]
H-SH2C5-[40-80/0.1]-PC[1-2/0.01]-V[1.2-4.96/0.01]-A[1-89/1]-F[10-78/0.1]-S[1-15/0.1]
H-SH2C6-[40-80/0.1]-P[2-6/0.01]-V[1.2-5.96/0.01]-A[1-89/1]-F[10-78/0.1]-S[1-15/0.1]
H-SH2C6-[40-80/0.1]-PC[1-2/0.01]-V[1.2-5.96/0.01]-A[1-89/1]-F[10-78/0.1]-S[1-15/0.1]
H-SH2C8-[40-100/0.1]-P[3-8/0.01]-V[1.5-7.96/0.01]-A[1-89/1]-F[10-98/0.1]-S[1-15/0.1]
H-SH2C8-[40-100/0.1]-PC[1.5-3/0.01]-V[1.5-7.96/0.01]-A[1-89/1]-F[10-98/0.1]-S[1-15/0.1]
H-SH2C10-[40-100/0.1]-P[3-10/0.01]-V[1.5-9.96/0.01]-A[1-89/1]-F[10-98/0.1]-S[1-15/0.1]
H-SH2C10-[40-100/0.1]-PC[1.5-3/0.01]-V[1.5-9.96/0.01]-A[1-89/1]-F[10-98/0.1]-S[1-15/0.1]
H-SH2C13-[40-100/0.1]-P[6-13/0.01]-V[2-12.96/0.01]-A[1-89/1]-F[10-98/0.1]-S[1-15/0.1]
H-SH2C13-[40-100/0.1]-PC[3-6/0.01]-V[2-12.96/0.01]-A[1-89/1]-F[10-98/0.1]-S[1-15/0.1]
H-SH2C16-[40-100/0.1]-P[10-16/0.01]-V[3-15.96/0.01]-A[1-85/1]-F[30-98/0.1]-S[1-15/0.1]
H-SH2C16-[40-100/0.1]-PC[5-9.99/0.01]-V[3-15.96/0.01]-A[1-85/1]-F[30-98/0.1]-S[1-15/0.1]
H-SH2C20-[40-100/0.1]-P[13-20/0.01]-V[3-19.96/0.01]-A[1-85/1]-F[22-98/0.1]-S[1-15/0.1]
H-SH2C20-[40-100/0.1]-PC[6.5-12.99/0.01]-V[3-19.96/0.01]-A[1-85/1]-F[22-98/0.1]-S[1-15/0.1]
H-SH2C25-[40-100/0.1]-P[18-25/0.01]-V[4-24.96/0.01]-A[1-85/1]-F[30-98/0.1]-S[1-14/0.1]
H-SH2C25-[40-100/0.1]-PC[9-17.99/0.01]-V[4-24.96/0.01]-A[1-85/1]-F[30-98/0.1]-S[1-14/0.1]

Standard Unit Price	Minimum order quantity	Standard Shipping Days ?	RoHS	Tip shape	Material	Surface treatment	Shank (mounting part) shape	D (Shank diameter) (mm)	A (°)	E (mm)	F (mm)	K (°)	L (L dimension) (mm)	P (mm)	PC (P dimension alteration) (mm)	Q (mm)	R (mm)	S (mm)	V (mm)	Y (°)
-	1	Quote	10	2A	SKH51	TiCN	Regular	3	1 ～ 89	-	10 ～ 78.1	-	40 ～ 80	2 ～ 3	-	-	-	-	-	-
-	1	Quote	10	2A	SKH51	TiCN	Regular	3	1 ～ 89	-	10 ～ 78.1	-	40 ～ 80	-	1 ～ 2	-	-	-	-	-
-	1	Quote	10	2A	SKH51	TiCN	Regular	4	1 ～ 89	-	10 ～ 78.1	-	40 ～ 80	2 ～ 3.99	-	-	-	-	-	-
-	1	Quote	10	2A	SKH51	TiCN	Regular	4	1 ～ 89	-	10 ～ 78.1	-	40 ～ 80	-	1 ～ 2	-	-	-	-	-
-	1	Quote	10	2A	SKH51	TiCN	Regular	5	1 ～ 89	-	10 ～ 78.1	-	40 ～ 80	2 ～ 5	-	-	-	-	-	-
-	1	Quote	10	2A	SKH51	TiCN	Regular	5	1 ～ 89	-	10 ～ 78.1	-	40 ～ 80	-	1 ～ 2	-	-	-	-	-
-	1	Quote	10	2A	SKH51	TiCN	Regular	6	1 ～ 89	-	10 ～ 78.1	-	40 ～ 80	2 ～ 6	-	-	-	-	-	-
-	1	Quote	10	2A	SKH51	TiCN	Regular	6	1 ～ 89	-	10 ～ 78.1	-	40 ～ 80	-	1 ～ 2	-	-	-	-	-
-	1	Quote	10	2A	SKH51	TiCN	Regular	8	1 ～ 89	-	10 ～ 98.2	-	40 ～ 100	3 ～ 8	-	-	-	-	-	-
-	1	Quote	10	2A	SKH51	TiCN	Regular	8	1 ～ 89	-	10 ～ 98.2	-	40 ～ 100	-	1.5 ～ 3	-	-	-	-	-
-	1	Quote	10	2A	SKH51	TiCN	Regular	10	1 ～ 89	-	10 ～ 98.2	-	40 ～ 100	3 ～ 10	-	-	-	-	-	-
-	1	Quote	10	2A	SKH51	TiCN	Regular	10	1 ～ 89	-	10 ～ 98.2	-	40 ～ 100	-	1.5 ～ 3	-	-	-	-	-
-	1	Quote	10	2A	SKH51	TiCN	Regular	13	1 ～ 89	-	10 ～ 98.2	-	40 ～ 100	6 ～ 13	-	-	-	-	-	-
-	1	Quote	10	2A	SKH51	TiCN	Regular	13	1 ～ 89	-	10 ～ 98.2	-	40 ～ 100	-	3 ～ 6	-	-	-	-	-
-	1	Quote	10	2A	SKH51	TiCN	Regular	16	1 ～ 89	-	30 ～ 99	-	40 ～ 100	10 ～ 16	-	-	-	-	-	-
-	1	Quote	10	2A	SKH51	TiCN	Regular	16	1 ～ 89	-	30 ～ 99	-	40 ～ 100	-	5 ～ 9.99	-	-	-	-	-
-	1	Quote	10	2A	SKH51	TiCN	Regular	20	1 ～ 89	-	30 ～ 99	-	40 ～ 100	13 ～ 20	-	-	-	-	-	-
-	1	Quote	10	2A	SKH51	TiCN	Regular	20	1 ～ 89	-	30 ～ 99	-	40 ～ 100	-	6.5 ～ 12.99	-	-	-	-	-
-	1	Quote	10	2A	SKH51	TiCN	Regular	25	1 ～ 89	-	30 ～ 99	-	40 ～ 100	18 ～ 25	-	-	-	-	-	-
-	1	Quote	10	2A	SKH51	TiCN	Regular	25	1 ～ 89	-	30 ～ 99	-	40 ～ 100	-	9 ～ 17.99	-	-	-	-	-
-	1	Quote	10	2B	SKH51	TiCN	Regular	3	-	-	-	-	40 ～ 80	2 ～ 3	-	-	0.1 ～ 15	-	-	-
-	1	Quote	10	2B	SKH51	TiCN	Regular	3	-	-	-	-	40 ～ 80	-	1 ～ 2	-	0.1 ～ 15	-	-	-
-	1	Quote	10	2B	SKH51	TiCN	Regular	4	-	-	-	-	40 ～ 80	2 ～ 4	-	-	0.1 ～ 15	-	-	-
-	1	Quote	10	2B	SKH51	TiCN	Regular	4	-	-	-	-	40 ～ 80	-	1 ～ 2	-	0.1 ～ 15	-	-	-
-	1	Quote	10	2B	SKH51	TiCN	Regular	5	-	-	-	-	40 ～ 80	2 ～ 5	-	-	0.1 ～ 15	-	-	-
-	1	Quote	10	2B	SKH51	TiCN	Regular	5	-	-	-	-	40 ～ 80	-	1 ～ 1.99	-	0.1 ～ 15	-	-	-
-	1	Quote	10	2B	SKH51	TiCN	Regular	6	-	-	-	-	40 ～ 80	2 ～ 6	-	-	0.1 ～ 15	-	-	-
-	1	Quote	10	2B	SKH51	TiCN	Regular	6	-	-	-	-	40 ～ 80	-	1 ～ 2	-	0.1 ～ 15	-	-	-
-	1	Quote	10	2B	SKH51	TiCN	Regular	8	-	-	-	-	40 ～ 100	3 ～ 8	-	-	0.1 ～ 15	-	-	-
-	1	Quote	10	2B	SKH51	TiCN	Regular	8	-	-	-	-	40 ～ 100	-	1.5 ～ 3	-	0.1 ～ 15	-	-	-
-	1	Quote	10	2B	SKH51	TiCN	Regular	10	-	-	-	-	40 ～ 100	3 ～ 10	-	-	0.1 ～ 15	-	-	-
-	1	Quote	10	2B	SKH51	TiCN	Regular	10	-	-	-	-	40 ～ 100	-	1.5 ～ 3	-	0.1 ～ 15	-	-	-
-	1	Quote	10	2B	SKH51	TiCN	Regular	13	-	-	-	-	40 ～ 100	6 ～ 13	-	-	0.1 ～ 15	-	-	-
-	1	Quote	10	2B	SKH51	TiCN	Regular	13	-	-	-	-	40 ～ 100	-	3 ～ 6	-	0.1 ～ 15	-	-	-
-	1	Quote	10	2B	SKH51	TiCN	Regular	16	-	-	-	-	40 ～ 100	10 ～ 16	-	-	0.1 ～ 15	-	-	-
-	1	Quote	10	2B	SKH51	TiCN	Regular	16	-	-	-	-	40 ～ 100	-	5 ～ 9.99	-	0.1 ～ 15	-	-	-
-	1	Quote	10	2B	SKH51	TiCN	Regular	20	-	-	-	-	40 ～ 100	13 ～ 20	-	-	0.1 ～ 15	-	-	-
-	1	Quote	10	2B	SKH51	TiCN	Regular	20	-	-	-	-	40 ～ 100	-	6.5 ～ 12.99	-	0.1 ～ 15	-	-	-
-	1	Quote	10	2B	SKH51	TiCN	Regular	25	-	-	-	-	40 ～ 100	18 ～ 25	-	-	0.1 ～ 15	-	-	-
-	1	Quote	10	2B	SKH51	TiCN	Regular	25	-	-	-	-	40 ～ 100	-	9 ～ 17.99	-	0.1 ～ 15	-	-	-
-	1	Quote	10	2C	SKH51	TiCN	Regular	3	1 ～ 89	-	10 ～ 78	-	40 ～ 80	2 ～ 3	-	-	-	1 ～ 15	1 ～ 2.96	-
-	1	Quote	10	2C	SKH51	TiCN	Regular	3	1 ～ 89	-	10 ～ 78	-	40 ～ 80	-	1 ～ 2	-	-	1 ～ 15	1 ～ 2.96	-
-	1	Quote	10	2C	SKH51	TiCN	Regular	4	1 ～ 89	-	10 ～ 78	-	40 ～ 80	2 ～ 4	-	-	-	1 ～ 15	1 ～ 3.96	-
-	1	Quote	10	2C	SKH51	TiCN	Regular	4	1 ～ 89	-	10 ～ 78	-	40 ～ 80	-	1 ～ 2	-	-	1 ～ 15	1 ～ 3.96	-
-	1	Quote	10	2C	SKH51	TiCN	Regular	5	1 ～ 89	-	10 ～ 78	-	40 ～ 80	2 ～ 5	-	-	-	1 ～ 15	1.2 ～ 4.96	-
-	1	Quote	10	2C	SKH51	TiCN	Regular	5	1 ～ 89	-	10 ～ 78	-	40 ～ 80	-	1 ～ 2	-	-	1 ～ 15	1.2 ～ 4.96	-
-	1	Quote	10	2C	SKH51	TiCN	Regular	6	1 ～ 89	-	10 ～ 78	-	40 ～ 80	2 ～ 6	-	-	-	1 ～ 15	1.2 ～ 5.96	-
-	1	Quote	10	2C	SKH51	TiCN	Regular	6	1 ～ 89	-	10 ～ 78	-	40 ～ 80	-	1 ～ 2	-	-	1 ～ 15	1.2 ～ 5.96	-
-	1	Quote	10	2C	SKH51	TiCN	Regular	8	1 ～ 89	-	10 ～ 98	-	40 ～ 100	3 ～ 8	-	-	-	1 ～ 15	1.5 ～ 7.96	-
-	1	Quote	10	2C	SKH51	TiCN	Regular	8	1 ～ 89	-	10 ～ 98	-	40 ～ 100	-	1.5 ～ 3	-	-	1 ～ 15	1.5 ～ 7.96	-
-	1	Quote	10	2C	SKH51	TiCN	Regular	10	1 ～ 89	-	10 ～ 98	-	40 ～ 100	3 ～ 10	-	-	-	1 ～ 15	1.5 ～ 9.96	-
-	1	Quote	10	2C	SKH51	TiCN	Regular	10	1 ～ 89	-	10 ～ 98	-	40 ～ 100	-	1.5 ～ 3	-	-	1 ～ 15	1.5 ～ 9.96	-
-	1	Quote	10	2C	SKH51	TiCN	Regular	13	1 ～ 89	-	10 ～ 98	-	40 ～ 100	6 ～ 13	-	-	-	1 ～ 15	2 ～ 12.96	-
-	1	Quote	10	2C	SKH51	TiCN	Regular	13	1 ～ 89	-	10 ～ 98	-	40 ～ 100	-	3 ～ 6	-	-	1 ～ 15	2 ～ 12.96	-
-	1	Quote	10	2C	SKH51	TiCN	Regular	16	1 ～ 85	-	30 ～ 98	-	40 ～ 100	10 ～ 16	-	-	-	1 ～ 15	3 ～ 15.96	-
-	1	Quote	10	2C	SKH51	TiCN	Regular	16	1 ～ 85	-	30 ～ 98	-	40 ～ 100	-	5 ～ 9.99	-	-	1 ～ 15	3 ～ 15.96	-
-	1	Quote	10	2C	SKH51	TiCN	Regular	20	1 ～ 85	-	22 ～ 98	-	40 ～ 100	13 ～ 20	-	-	-	1 ～ 15	3 ～ 19.96	-
-	1	Quote	10	2C	SKH51	TiCN	Regular	20	1 ～ 85	-	22 ～ 98	-	40 ～ 100	-	6.5 ～ 12.99	-	-	1 ～ 15	3 ～ 19.96	-
-	1	Quote	10	2C	SKH51	TiCN	Regular	25	1 ～ 85	-	30 ～ 98	-	40 ～ 100	18 ～ 25	-	-	-	1 ～ 14	4 ～ 24.96	-
-	1	Quote	10	2C	SKH51	TiCN	Regular	25	1 ～ 85	-	30 ～ 98	-	40 ～ 100	-	9 ～ 17.99	-	-	1 ～ 14	4 ～ 24.96	-

1
2
3
4
5
Next >>

Products homepage

Basic information

With/without jector	W/O

Configure

1,998Suggestion of an applicable part number.

View Part Numbers

Some specification is not specified yet.

The part number is completed.

Basic Attributes

Tip shape
2A

2B

2C

2D

3A

3B

3C

3D

4A

4B

4C

4D

5B

5C

5D

6A

6B

6C

6D

7B

7C

7D

8B

8C

8D

9C

9D

10C

10D
Clear
Surface treatment
- Dicoat
- TiCN
- HW coating
Clear
Shank (mounting part) shape
- Regular
- With locating dowel hole
- Tapped
Clear
D (Shank diameter)(mm)
3

4

5

6

8

10

13

16

20

25
Clear
A(°)
[1-89/0.01° Unit(s)][1-89/1° Unit(s)]
Clear
E(mm)
[1.1-24.99/0.01mm Unit(s)]
Clear
F(mm)
[10-99/0.1mm Unit(s)][10-78/0.01mm Unit(s)]
Clear
K(°)
[1-89/0.01° Unit(s)][1-89/1° Unit(s)]
Clear
L (L dimension)(mm)
[40-100/0.1mm Unit(s)][40-80/0.01mm Unit(s)]
Clear
P(mm)
3

4

5

6

8

10

13

16

20

25
[2-25/0.01mm Unit(s)][2-4/0.001mm Unit(s)]
Clear
PC (P dimension alteration)(mm)
[1-17.99/0.01mm Unit(s)][1-1.99/0.001mm Unit(s)][3-6/0.001mm Unit(s)]
Clear
Q(mm)
0
[0.5-15/0.1mm Unit(s)][0.01-9.6/0.5mm Unit(s)]
Clear
R(mm)
0
[0-15/0.1mm Unit(s)][0.5-15/0.01mm Unit(s)][0.01-9.6/0.5mm Unit(s)]
Clear
S(mm)
[0.5-40/0.1mm Unit(s)][0.65-15/0.01mm Unit(s)]
Clear
V(mm)
[1-2.9/0.1mm Unit(s)][1-24.99/0.01mm Unit(s)]
Clear
Y(°)
[45-90/1° Unit(s)]
Clear
Type
- H-MPH(2-10)C
- H-MPH(2-11)D
- H-MPH(2-4･6)A
- H-MPH(2-8)B
- H-PH(2-10)C
- H-PH(2-11)D
- H-PH(2-4･6)A
- H-PH(2-8)B
- H-SH(2-10)C
- H-SH(2-11)D
- H-SH(2-4･6)A
- H-SH(2-8)B
- H-SP-C(2-10)C
- H-SP-C(2-11)D
- H-SP-C(2-4･6)A
- H-SP-C(2-8)B
- HW-MPH(2-10)C
- HW-MPH(2-11)D
- HW-MPH(2-4･6)A
- HW-MPH(2-8)B
- HW-PH(2-10)C
- HW-PH(2-11)D
- HW-PH(2-4･6)A
- HW-PH(2-8)B
- HW-SH(2-10)C
- HW-SH(2-11)D
- HW-SH(2-4･6)A
- HW-SH(2-8)B
- HW-SP-C(2-10)C
- HW-SP-C(2-11)D
- HW-SP-C(2-4･6)A
- HW-SP-C(2-8)B
- T-PH(2-10)C
- T-PH(2-4)A
- T-PH(2-7)B
- T-PH(3-11)D
- T-SP(2-10)C
- T-SP(2-4)A
- T-SP(2-7)B
- T-SP(3-11)D
- T-SP-C(2-10)C
- T-SP-C(2-4)A
- T-SP-C(2-7)B
- T-SP-C(3-10)D
Clear
Material
- SKD11 Equivalent
- SKH51
- Powdered high-speed steel
Clear
Filter by CAD data type
- 2D
- 3D
Clear