1. ER model:ER08~ER50 
2.Precision:0.005~0.015mm
3.Surface roughness:R2. 

We offer all kinds of ER Collet

Model	D(mm)	L2(mm)	d(mm)	Order No
ER8	8	13.5	1.5, 2.0, 2.5 ,to 5	YS0539
ER11	11.5	18	1.0,1.5,2.0,2.5,3.0,to 7	YS0540
ER16	17	27	1.0,2.0,3.0,4.0 to 10	YS0541
ER20	21	31	2.0,3.0,4.0,5.0 to 13	YS0542
ER25	26	35	2.0,3.0,4.0,5.0 to 16	YS0543
ER32	33	40	2.0,3.0,4.0,5.0 to 20	YS0544
ER40	41	46	4.0,5.0,6.0to 26	YS0545
Model	D(inch)	L2(inch)	d(inch)	Order No
ER11	11.5	18	1/16, 3/32,1/8,3/16 ,7/32,1/4	YS0540
ER16	17	27	1/16, 3/32,1/8,3/16 ,7/32,1/4,5/16,11/21,3/8	YS0541
ER20	21	31	1/16, 3/32,1/8,3/16 ,7/32,1/4,5/16,11/21,3/8, 13/32,7/16,1/2,	YS0542
ER25	26	35	1/16, 3/32,1/8,3/16,7/32,1/4,5/16,11/21,3/8, 13/32,7/16,1/2,17/32,9/16,5/8	YS0543
ER32	33	40	1/16, 3/32,1/8,3/16 ,7/32,1/4,5/16,11/21,3/8, 13/32,7/16,1/2,17/32,9/16,5/8,21/32,11/16,3/4	YS0544
ER40	41	46	1/16, 3/32,1/8,3/16 ,7/32,1/4,5/16,11/21,3/8, 13/32,7/16,1/2,17/32,9/16,5/8,21/32,11/16,3/4,7/8	YS0545