1) Made of high quality spring steel

2) Powerful clamping ability with high precision and stability

3) Used for drilling, boring, milling, tapping, engraving operation. Etc

4) Adapted for DIN6499B

Model	d H7	D	D1	D2	L	L1	L2	L3	Collapsible capacity
ER8	0. 5-5. 0	8	8. 5	6. 5	13. 5	2. 7	1. 5	1. 2	0. 5
ER11	1. 0-7. 0	11	11. 5	9. 5	18	3. 8	2. 5	2	0. 5
ER16	1. 0-2. 0	16	17	13. 8	27. 5	6. 26	4	2. 7	0. 5
	> 2. 0-10. 0								1
ER20	1. 0-2. 5	20	21	17. 4	31. 5	6. 36	4. 8	2. 8	0. 5
	> 2. 5-13. 0								1
ER25	1. 0-2. 5	25	26	22	34	6. 66	5	3. 1	0. 5
	> 2. 5-16. 0								1
ER32	2. 0-2. 5	32	33	29. 2	40	7. 16	5. 5	3. 6	0. 5
	> 3. 5-20. 0								1
ER40	3. 0-26. 0	40	41	36. 2	46	7. 66	7	4. 1	1
ER50	6. 0-10. 0	50	52	64	60	12. 6	8. 5	5. 5	1
	> 10. 0-34. 0								2