Park Tools CT-3.3 is a professional shop-quality tool for the removal and installation of bicycle chain rivets for chain sizing and replacement. Compatible with virtually all single-speed and multi-speed chains* including SRAM eTap AXS. The CT-3.3 features a floating locating shelf for compatibility with any width of the 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.