Use Abbey Bike Tools' Single-Sided Bottom Bracket Socket to install your outboard bearing bottom bracket cups. Compatible with outboard bearing Campagnolo, SRAM, FSA, and older Shimano bottom brackets, this tool is fashioned from sturdy 7075 aluminum to ensure it's durable enough to be used repeatedly in a shop or occasionally in your own garage. Indentations around the edges increase grip, and it pairs with a 3/8-inch square drive ratchet or torque wrench when you need some extra tightening power.