Color: Black/Red/Gold/Silver Material: aluminum alloy/stainless steel Packaging tool box size: 25*22*7CM Weight: 1276G Packing:1set Bicycle shaft removal tool set Function: For removal and installation of bottom bracket and bottom bracket bearing Press-fit for bicycle headsets. Reminder: Please use grease when installing, it will help you a lot and protect your headset or bottom bracket, also make sure the cup is evenly placed on the head tube of the frame before pressing with this tool, so as not to damage . Features A kit specially designed for bicycle headset and bottom bracket installation, one-piece bearing design, perfect fit for bicycle headset and bottom bracket , no gap, no static pressure wear, will not damage your bicycle frame and bottom bracket . Let you easily and professionally complete the work. Applicable to a variety of press-fit bottom bracket specifications, installation and removal only need this set to meet all needs. There are some press-fit bottom brackets with aluminum sleeves. When disassembling, there may be a problem that only the bottom bracket bearing can be removed. Because the force of the tool is on the bearing, the aluminum sleeve center axis may cause the bearing to come out first.The aluminum sleeve is still on the frame, In addition, the outer edge of the bottom bracket is parallel to the edge of the frame bottom bracket, Because the tool cannot be fixed at the frame bottom bracket,Therefore, static pressure tools cannot be used. Applicable press-in and removal bearing specifications: 6805 (25X37X7) Bearing 6806 (30X42X7) Bearing Press-in BB R92/T86 R30 (BB30 to BB24 converter) Static press-in and removal of PF30, bbright, BB386 and other bottom brackets (sram's PF30 special bottom bracket) Can be used for the removal and installation of BB86, BB30, BB91, BB92, PF30 and other press-fit bottom brackets Almost all hollow threaded bottom bracket bearings and BB86, BB30, BB91, BB30 to 24, BB92 and other press-fit bottom bracket bearings can be removed.