There are plenty of external bottom bracket installation and removal tools on the market, but one of our favorites continues to be the Bottom Bracket Tool - BBT-69. 2 from Park Tool. For one, its built to last and constructed from precision CNC machined aluminum. The 16-notch tooth profiles are updated to optimize the fit between the tool and 44mm OD BB cups, so your turquoise anodized bottom bracket looks the same on your bike as when you took it out of the box. Fits most Shimano, Campagnolo, Chris King, FSA, Hope, SRAM/TrvVativ, Race Face, Surly, Wheels Manufacturing bottom bracket cups and others. Also works on 16-notch centerlock rotor lockrings. Park Tool anodizes and laser etches the tool for easy identification and the 3/8in drive works with ratcheting handles and torque wrenches.