1. Wide Application for chains from 3/32 inch to 3/16 inch, this universal chain rivet is suitable for all standard bicycle chains, mountain bike chains, and 8/9/10speed bicycle chains. Alignment is required during use to avoid damage or other issues. 2. Easy to Use Featuring quick and precise chain pin removal and installation, this bicycle chain tool works with all types of bikes, including mountain bikes, road bikes, and folding bikes. It comes with a dualdrive pin and a simple chain breaker. 3. Portable Design Compact and lightweight, this bike chain breaker can easily fit in a bag or bike pouch. No additional tools are needed for repairs, and you won't have to worry about chain damage while riding. The handle measures approximately 70 mm / 2.76 inches. 4. Quality Crafted from strength steel with a contoured, rubbercoated handle for comfort, this chain breaker tool boasts workmanship and a refined finish. It's an ideal tool for outdoor cycling or emergency use.