[Metal Construction]: Crafted from metal, this sprocket ensures long term performance and reliability in applications [Fit]: Designed with a 5/8inch bore diameter, Jackshaft sprocket provides a accurate fit for seamless integration with your machinery [Versatile Compatibility]: Suitable for use with 40, 41, and 420 chains, making it an ideal choice for a wide range of mechanical systems [Easy Installation]: Easy to install with tools required, making it convenient for all users Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Color: As Shown Material: Metal Package Contents: 1 * Jackshaft Sprocket 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.