A-TYPE ER-11 COLLET CHUCK NUT (3900-0685)

A-Type ER-11 Collect Chuck Nut Balanced to 18,000 RPM Tolerance is .0003" Maximum Material is 42 CrMo Hardness is HRC 50~52 Thread Tolerance Class is 4H-Class Thread is M14 X 0.75 D is 19mm L is 11.3 mm Shipping Weight: 0.01 lbs