Onsrud Cutter 33-78, ISO 40 ER40 Toolholder

Balanced to 25,000 RPM at G2.5, T.I.R 0.0001” or better from taper to collet pocket, Nut and pull stud included.

Note: Measure the “A” dimension wth the collet in the nut. Dimensions in Millimeters.