With the Tutto, mechanics can now utilize one tool to handle single, 8-, 9-, 10-, and 11-speed chains.Speed Dial feature, mechanics can now utilize one tool to handle single through eight, nine, ten, and eleven speed chainsDual function RPG (retracting pin guide) supports and guides the tool pin up to the face of the chain eliminating misalignment and breakageDurable aluminum handle with ergonomic set back, protecting fingersSpeed Dial feature handles single through 8-, 9-, 10-, and 11-speed chainsDual function retracting pin guide supports and guides the tool pin up to the face of the chain eliminating misalignment and breakageDurable aluminum handle with ergonomic set back, to protect fingersLifetime warranty on all Pedro"s tools