Tutto Multi-chain tool Proprietary Speed Dial patents pending handles single through 8-, 9-, 10-, and 11-speed chains. A fourth position on the Speed Dial provides the anvil required to flare the roller pin on Campagnolo 11-speed chains, per the manufacturer's requirement. Dual-function RPG Retracting Pin Guide, patents pending eliminates misalignment and breakage. Also encloses guide pins to prevent loss, bending or breakage. Lifetime warranty. Speed Dial patents pending With Pedro's proprietary Speed Dial feature, mechanics can now utilize one tool to handle single through eight, nine, ten, and eleven speed chains. Dial in the right size and go to work. For Campagnolo's new 11-speed chains, the fourth position on the Speed Dial provides the anvil required to flair the roller pin per the manufacturer's requirement. RPG retracting pin guide patents pending The dual function RPG supports and guides the tool pin up to the face of the chain eliminating misalignment and breakage. For Campagnolo and Shimano chains, the RPG encloses the guide pin or master pin to prevent loss, bending or breakage, launching the guide pin directly into its intended target. No collateral damage. Durable aluminum handle with ergonomic set back, protecting fingers. Guide pin sheer slot for a clean break every time. An amazingly innovative shop quality chain tool Proprietary Speed Dial system makes it compatible with 1-8, 9, 10 and 11 speed chains! 4th position on the Speed Dial also provides the anvil required to deform the roller pin on Campy 11 RPG Retracting Pin Guide supports and guides the tool pin up the face of the chain Weight 375g, Number of tools 4, Compatibility all 1/8 and 3/32 single and multi-gear chains