1PC ER40 Collet AA ER Collet Chuck ER40 Collet Precision 0.008 1mm-32mm ER40 Spring Collet High Precision Collet ER40 Collet Set (Color : AA 0.008, Size : ER40-13) - Amazon.com
Amazon.com: 1Pc ER40 Collet Tool Precision Spring Collet from 3mm to 26mm CNC Collet Chuck for Milling Lathe Tools and Spindle Motors (Hole Diameter : ER40-8) : Tools & Home Improvement
9/16" ER 40 High Precision Spring Collets INCH (0.0003) T.I.R. Machinist Choice - Amazon.com