Holds all ER50 collets from 6 mm to 36 mmMade from alloy steel hardened to 54 56rcPrecision ground ID thread and taperHas an id thread of M64*2.0POutside diameter is 78 MMSUITABLE SPANNER IS ER50UM AND ER50 C TYPE key to tighteninginternal cam removes collet when unscrewedMARSTECH CODE IS ER50UM TYPE NUT








