CMT 184.095.00 ER32 Precision Collet, 3/8-Inch Diameter ER32 Precision collet for 3/8-Inch Shank Diameters. Fits CMT chucks 183.000/183.200/183.250/183.300. Fits most tapered spindle noses. Wide clamping tolerance +0-0,7mm. Suitable to most of the conical chucks.