Features: Suitable for 8.9.10 speed chain and most of high quality variable speed chain. Movable needles with high strength and durability. Made of quenched alloy steel CRV, the main part is made of high strength carbon steel, and the surface is chromium plated.
Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding.