Fits 36-notch bottom bracket tool fittings with a major diameter of 5153 mm and a minor diameter of 50.7 mmCompatible with Box Two Oversized M35 and Praxis Works M35Features a ratchet/torque wrench-compatible 3/8` driveExternal BB SocketBlack36 Notch51.7mmBBT-35-363/8`UPC/EAN/GTIN: 763477001382