If you work on motorcycles or ATVs, this auto riveting tool and chain breaker is an absolute must-have for your toolbox! This heavy-duty kit handles both breaking and riveting chains from #35 all the way up to #630, making it super versatile for different vehicles. It comes with three pin sizes (2mm, 3mm, 4mm) to fit various chain types, including cam chains. The design is straightforward but effective - you can break old chains safely and rivet new ones to form strong, reliable connections. For larger chains like #520 and up, it's recommended to grind the rivet head first for best results. The construction feels solid in your hands and exceeds industry standards, so you know it'll hold up to regular use. No more struggling with makeshift methods or paying shop prices for simple chain maintenance. Whether you're building a custom bike, doing routine maintenance, or handling emergency repairs, this tool makes chain work so much easier. The precision manufacturing means clean breaks and proper riveting every time. It's one of those tools that pays for itself the first time you use it, and you'll wonder how you ever managed without it in your garage.