1/2" ER20 Collet for Spindles

This collet will accept tools with a 1/2" (12.7mm) shank. This is a clamping precision grade collet with a TIR (Total Indicated runout) of less than 0.01 mm, or 0.0004 inches. Accepts 1/2" shank
Fits all Build Your CNC spindles.