ER40 precision collet to be used to fit CMT chucks 183.201, and 183.301. Fits most tapered spindle noses, features a wide clamping tolerance (+0-0,7mm) and is suitable to most of conical chucks. Collet is 41mm (1-5/8-inch) large, 46mm long (1-13/16-inch) and fits 20mm shank diameters. Spezial dimensions are available on request.