we offer all kinds of NT ER Collet chuck
From ER11 to 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 service
Bulk of kinds model in stock and fast delivery 

Model  NT40-ER40-80
L  183.4
D 44.45
d1 63
Drawbar T M16x2
Order No YS0631