We offer all kinds of BT ER Collet chuck
include (BT30 ,40,50 and ER11 ,ER16 ,ER20
ER25 ,ER32,ER40 and ER50 )
The protrustion length are difference from 20mm t0 200mm .
Offer balance by G2.5 and without future balance
Preicison : from 0.003 to 0.015
Holder hardend : 48-55 HRC
we offer custom collet chuck services
Bulk of kinds model in stock and fast delivery 

Model  CAT40-ER16-6"
L 254.2
L1 6
d1 28
Drawbar T W5/8.11
Order No YS6192