1. Made of high-quality carbon steel material, sturdy, durable and practical. 2. Strong clamping force and not easy to deform. 3. Ergonomic design, simple operation, time-saving and labor-saving. 4. Reasonable size, light weight, easy to carry and use. 5. High-quality and fine workmanship, rust-proof and long service life. Description: This collet nut is an excellent replacement for broken parts and is suitable for most tool holders. Precision ground and hardened. Features: 1. Made of high-quality carbon steel material, sturdy, durable and practical. 2. Strong clamping force and not easy to deform. 3. Ergonomic design, simple operation, time-saving and labor-saving. 4. Reasonable size, light weight, easy to carry and use. 5. High-quality and fine workmanship, rust-proof and long service life. Specifications: Condition: 100% Brand New Item Type: Clamp Nut Material: Carbon Steel Color: Black Applicable Collet: ER40 Collet, ER32 Collet, ER25 ColletUM Type Nut Diameter Thread ER25UM 42mm M32*1.5 ER32UM 50mm M40*1.5 ER40UM 63mm M50*1.5 Package List: 1 x Clamp Nut Notes: 1. Actual product color may be different from the photo due to light reasons. 2. Product measurement may have slight deviations.