Features 1、Support floating and telescoping, effectively protecting the tap, the front can float 5mm, and the rear can float 6mm 2、Made after quenching and hardening, possess high concentricity and good processing effect 3、Knife handle body is made of 20CrMrTi steel, fully carburized and heat treated, and the inner and outer diameters are ground to enhance wear resistance and stable performance 4、The required tapping quality can be achieved with ordinary chuck, suitable for all kinds of machine taps, very practical 5、Collet chuck holder come with stable structure, excellent performance and long service life Specification Item Type: Collet Chuck holder Material: 20CrMrTi steel Purpose: CNC lathe tapping Hardness: HRC48-55 Surface: >0.08mm Adapter Chuck: ER32 Applicable Taps: M2-M30 Front Float: Approx. 5mm / 0.2in Rear Float: Approx. 6mm / 0.24in Package List 1 x Collet Chuck holder