ER25 Collet Chuck, NBT30, 2.36" Gage Length

Clamping range 2-16 mm metric or ø1/8" - 5/8" inch. JIS B 6339 BT30 taper for ATC that do not use drive keys. Balanced to G2.5 at 25,000 RPM, runout within 0.003 mm. AD coolant through the flange, M12×1.75 retention knob thread. Supplied with a clamping nut; collets, wrench and retention knob sold separately.