The Trixie Chrome features eight functions designed for the urban cyclist. This includes a lockring tool and 15mm axle nut wrench, along with 8, 9, and 10mm box end wrenches. It also has both 4 and 5mm hexes to cover most fixed gear or single speed bike repairs. The Trixie Chrome attaches to frame braze ons with wing nuts for quick and easy removal and installation. And, at 7. 4 inches of length with an ergonomic shape, the Trixie provides excellent leverage for loosening stubborn cogs or axle nuts. Pedro's Trixie Chrome is made from 5mm thick heat treated tool steel for strength and long lasting performance. In fact Pedro's cover the Trixie Chrome with a Lifetime Warranty, and even built in a bottle opener for post ride recovery.