The 6MIL BT-01 BB installation/removal tool is a multi-purpose bottom bracket tool for press fit bottom brackets on most BMX frames and many other frames. Featuring both installation and removal features for your press-fit bottom bracket bearing without damaging your frame. Fits a multitude of different press fit bottom brackets. Material: high grade and heat-treated steel Size: for 19mm, 22mm & 24mm Mid BB, BB30(30 mm), SRAM GXP (22 / 24 mm) & DUB(28.99 mm) Weight: 722g / 25.5oz Features: · installs and removes press-fit bottom bracket bearings without damaging the frame or bearing · for 19/22/24mm Mid-sized BB bearings · fits BB86 / BB90 / BB92(24 mm), BB30(30 mm), SRAM GXP (22 / 24 mm), DUB(28.99 mm) BB's · 17mm nuts on each side