13 Piece Precision R8 Collet Set , Alloy Steel Mill Collet Chuck , for Mill Machine 1/8inch - 7/8inch

R8 Collet Set is to cut keyways, hold double end mills, and more.

13 size collets: 1/8-inch, 3/16-inch, 1/4-inch, 5/16-inch, 3/8-inch, 7/16-inch, 1/2-inch, 9/16-inch, 5/8-inch, 11/16-inch, 3/4-inch, 13/16-inch, and 7/8-inch.

Each of the collets has an internal thread to allow you to tighten into the mill.

Spindle is R8 taper that any R8 shank will fit; 7/16" - 20 UNF internal thread on the top side and pull up into the keyed taper squeezing the end mill to grip it.

R8 Collets are made of high grade tool steel. Hardened and precision ground.