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 1 x Collet Chuck holder Item Type: Collet Chuck holderMaterial: 20CrMrTi steelPurpose: CNC lathe tappingHardness: HRC48-55Surface: > 0.08mmAdapter Chuck: ER32Applicable Taps: M2-M30Front Float: Approx. 5mm / 0.2inRear Float: Approx. 6mm / 0.24in Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-dadangjia