Unior Professional Chain Tool The Only Chain Tool You'll Need If you ever want to remove a chain or take links out of a chain, you'll need a chain tool. The Unior Professional Chain Tool is compatible with virtually any chain you can throw at it. It features a sturdy pin complete with ball bearings. The bearing helps to ensure the chain pin is driven straight every time. Features Compatible with virtually any chain you can throw at it Features a sturdy pin complete with ball bearings Not compatible with SRAM AXS Flattop chains | Unior | Professional Chain Tool Red/orange