BT40 ER16 COLLET CHUCK SET PROJ. 3.94″ PRECISION BAL.25,000RPM
Taper: BT40. Projection: 3.94″ (100mm). Made of alloy steel and hardened to HRC 60-62. Thread :M12 x 1.75P. We will do our best to fix it. All of our products are 100% inspected. Product Features.