Park Tool BBT-118 Steel Bottom Bracket / Lockring Tool - 8 Notch

Constructed from precision-machined 4140 steel, the BBT-118 is a heavy duty tool for the removal and installation of select bicycle components with an eight-notch tool fitting. The BBT-118 is designed to be compatible with any bottom bracket with the corresponding tool fitting, with an extra-deep body to accommodate extra-wide spindles and low-profile walls at the point of engagement for recessed lockrings. The BBT-118 has three methods of tool engagement-a 3/8" drive fitting, a 1" hex fitting, and 36 mm wrench flats-allowing you to take on even the most seized components. Installs and removes the following components with eight-notch tool fittings: ShimanoA(R) OctalinkA(R) drive-side bottom bracket cups with external notches ISIS Drive bottom bracket cups including TruvativA(R) and BontragerA(R) Front chainring lockring for BoschA(R) Gen 3, Gen 4, and Gen 5 e-bike systems Front chainring lockring for SpecializedA(R) Levo Brose e-bike systems Tool specifications: 3/8" drive fitting 1" and 36 mm wrench flats 8 notches with a nominal inside diameter of 37.6 mm and outside diameter of 42.7 mm Internal clearance: 31.14 mm (1.226") depth (from tool face) x 22.48 mm (0.885") diameter Not rated for use with impact drivers