The Wheels Manufacturing 48.5/44mm Double-Sided Bottom Bracket Tool is a double ended bottom bracket wrench designed to fit 16-notch bearing cups with an outside diameter of 44mm as well as 16-notch bearing cups with an outside diameter of 48.5mm. It is used for installing and removing both 48.5mm and 44mm 16-notch bottom bracket cups. It is compatible with all Wheels Manufacturing bottom brackets as well as some FSA MegaEVO bottom brackets 44mm, 16-notch side matches up with Wheels Manufacturing bottom brackets, along with many other outboard bearing bottom brackets including Shimano, FSA MegaEXO and SRAM/Truvativ. The socket is machined for 1/2 drive, but a 3/8 to 1/2 adaptor is included so you can use it with 3/8 drive torque wrenches 48.5mm.
It is made from machined aluminium with an anodised red coating.