Haimer 40.320.40 Collet Chuck, ER 40, Short, Version SK 40: Amazon.com: Tools & Home Improvement
Amazon.com: Accusize Industrial Tools Cat40 Shank and 15 Pc Er40 Collet Set with Wrench in Fitted Strong Box, 1/8 to 1 inch, Ct40-Er40 : Tools & Home Improvement
D1-4 D125 LATH COLLET CHUCK (ER40 RANGE 1MM - 26MM) 3PCS BOLTS INCLUDED - - Amazon.com