The Campagnolo UT-CN400 Chain Tool is designed for use with the Ekar 13-speed chain but is backwards compatible with their 12-speed chains as well. This tool drives pins out easily and safely for drivetrain sizing. It just as easily drives pins in thanks to a peening function. The chain tool is incredibly durable and well-built, featuring excellent ergonomics for comfortable use. If you need the ultimate precision at your fingertips for your 12 or 13-speed chain, the UT-CN400 is a must.