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 Applicable Collet: ER40 Collet, ER32 Collet, ER25 Collet UM Type Nut Diameter Thread ER25UM 42mm M32*1.5 ER32UM 50mm M40*1.5 ER40UM 63mm M50*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.