The CT-3.3 is a professional shop-quality tool for removal and installation of bicycle chain rivets for chain sizing and replacement. Compatible with virtually all single-speed and multi-speed chains* including SRAM Flattop and SRAM T-Type. The CT-3.3 features a floating locating shelf for compatibility with any width of chain. Built to last and easy to use, the CT-3.3 features a comfortable handle, investment cast steel body and replaceable driving pin for years of dependable use.