Product Overview ER11 MT1 COLLET CHUCK ER11 MT1 MK1 Collet Chuck With M6 Drawbar Thread Item(s) 1 Pc. ER11 Collet Chuck With M6 Drawbar Thread Specification DIN6499B 0.015MM (0.0006") Run-Out Tolerance High Grade 1065 Carbon Steel Hardened & Precision Ground Product Photos Additional Technical Information