ST 8 1/2" R-8 Collet WITH ER 20 COLLET CHUCK
This is a collet with R-8 shank to match the spindle in your machine and a 1/2" diameter hole to accept your end mills. Included is an ER 20 collet chuck with 1/2" shank to fit into the R-8. By using the ER 20 collet chuck, you can change out your end mills with having to loosen the drawbar. ER 20 collets are available on our website in many sizes.
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