Description:

* Suitable for use with all ER Collets. * Produced to AT3 specifications. * Collet seat taper T. I. R. * Alloy forged steel for long, durable service life. * Hardened to RC 52-56 and ground to ensure maximum accuracy. * Through spindle coolant capability. Draw Bar Threads: BT-40: M16 x 2 BT-50: M24 x 3.