Feature: 1. The tapping tool holder can be floated and retracted, the front can float 5mm, and the rear can float 6mm. 2. Made of 20CrMrTi steel, fully carburized and heat treated to enhance wear resistance and stability. 3. The tapping tool holder is quenched and hardened, with high concentricity and good processing effect. 4. When processing threads, the tapping tool holder can be extended and contracted, which can effectively protect the taps. 5. The adapter chuck is ER20, and the applicable tap is M2‑M16, which is often used for tapping on CNC lathes. Specification: Item Type: Floating Tapping Chuck Holder Material: 20CrMrTi steel Purpose: CNC lathe tapping Hardness: HRC48-55 Surface: >0.08mm Adapted Chuck: ER20 Applicable Taps: M2-M16 . Package List: 1 x Floating Tapping Chuck Holder Note: This product is made of steel materials, please do not place the product in an environment that is too corrosive, humid and high temperature!