Hope pro 4 mtb straight pull front hubhope hubs have proven their reputation for bulletproof quality time and time again thats why hope pro 4 mtb straight pull front hubs are the benchmark for all other disc brake compatible front hubs features 15mm axle sealed stainless steel cartridge bearings hub shell machined from forged aluminium billet 6 bolt disc fitting unsurpassed reliability 32 holebuyhope wheels tyresfrom chain reaction cycles the worlds largest online bike store