Description: 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: SteelColor: BlackDetailed Size: As the picture showQuantity: 13PcsPackage Weight: 805gPackage Included:3 x pin sizes to fit a variety of chains. Pins size: 2.2mm, 2.9mm, and 3.8mm1 x Pin Guides 2.2mm Upper and 2.2mm Lower and Riveter Pin3 x Anvil 1 x Spring2 x Press Plate2 x Lever Handle1 x Chain Press(Carrying Case)Note:Please allow 1-3cm error due to manual measurement. Thanks for your understanding.