Feature 1This tool will break and rivet 420-630 rear drive chains. 2For Breaking and joining most drive chain from 35-630. 3For chain 520 and up, it is recommend to grind the rivet head. 4Designed to rivet chain links to form an endless chain or on cam chain to drive. 5This is an essentail tool, no motorcyle mechanic should do without it. This tool is designed to rivet chain links to form an endless chain and is versatile enough to be used on cam chain todrive chains or as a chain breaker by pushing the pin out. It can break and rivet 420-630 rear drive chains, but for chain 520 and up, it is recommend to grind the rivet head. This is an essentail tool, no motorcyle mechanic should do without it. You will need it. Features: 1. This tool will break and rivet 420-630 rear drive chains. 2. For Breaking and joining most drive chain from 35-630. 3. For chain 520 and up, it is recommend to grind the rivet head. 4.Designed to rivet chain links to form an endless chain or on cam chain to drive. 5.This is an essentail tool, no motorcyle mechanic should do without it. Specifications: Material: Steel Color: Black Detailed Size: As the picture show Quantity: 13Pcs Package Included: 3 x pin sizes to fit a variety of chains. Pins size: 2.2mm, 2.9mm, and 3.8mm 1 x Pin Guides 2.2mm Upper and 2.2mm Lower and Riveter Pin 3 x Anvil 1 x Spring 2 x Press Plate 2 x Lever Handle 1 x Chain Press (Carrying Case) Note: Please allow 1-3cm error due to manual measurement. Thanks for your understanding.