1. High-quality material: Our 4PCS Double Split Shaft Collars are made of oxide material, ensuring long-lasting durability and resistance to wear and tear. 2. Secure fastening: The set screw style design of our shaft collars guarantees a secure and reliable connection, preventing any unwanted slipping or movement. 3. Versatile usage: With an inner diameter of 20 x 40 x 15mm , these shaft collars can be easily adapted to fit applications, making them suitable for a wide range of machinery and equipment. 4. Convenient installation: The double split setscrew feature allows for easy installation and adjustment, saving you time and effort during setup. 5. Precise measurements: Our shaft collars are meticulously crafted with precision, ensuring accurate dimensions and a for your specific needs. Colour:Black Material:steel Package Contents: 1X Double Split Shaft Collars Set(4pcs) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.