Description: This collet nut is a great replacement for the broken part, fit most tool holders. Precision ground and hardened. Features: 1. Made of premium carbon steel material, which is durable and practical. 2. Strong clamping force is not easy to deform. 3. Ergonomic design, simple operation, saving time and effort. 4. Reasonable size and lightweight, portable for carrying and using. 5. High quality and fine workmanship, rust-proof, has a long service life. Specification: Condition: 100% Brand New Item Type: Clamping Nut Material: Carbon Steel Color: Black A Type Nut Diameter Thread ER11A 19mm M14*0.75 ER16A 28mm M22*1.5 ER20A 34mm M25*1.5 Package list: 1 x Clamping Nut Notes: 1. The actual product color may deviate from the photo due to light. 2. There may be a slight deviation in the measurement of product. Package List 1Made of premium carbon steel material, which is durable and practical. 2Strong clamping force is not easy to deform. 3Ergonomic design, simple operation, saving time and effort. 4Reasonable size and lightweight, portable for carrying and using. 5High quality and fine workmanship, rust-proof, has a long service life.