One oversized spindle to work across every bottom bracket standard Gutter Seal Technology� drastically improves sealing against the elements Significantly lighter than GXP� system Sealed cartridge bearings *Requires Park BBT-79 BB Tool (JBI p/n 610148) MTB and Road, includes 3mm spacer 68/73mm ENG DUB Aluminum BlackUPC/EAN/GTIN: 710845813726