bike crank arm set mountain cranksets 170mm 104 bcd with bottom bracket kit and chainring bolts for mtb bmx road bicyle, compatible with shimano, fsa, gaint (black) msreck <p>bike crank arm set mountain cranksets 170mm 104 bcd with bottom bracket kit and chainring bolts.</p><p></p><p>specifications:</p><p>material: aluminum alloy</p><p>bcd: 104mm / 4.09in</p><p>crank arm length: 170mm / 6.69in</p><p>crank related holes distance: 74mm / 2.91in</p><p>bottom bracket diameter: 23.79mm / 9.36in</p><p>bottom bracket width: 68~73mm / 2.67-2.87in</p><p>color: black</p><p>crank bolt diameter: 15mm / 5.9in</p><p>compatible with: single chain / double chain</p><p>weight: about 615g / 1.36 lbs</p><p></p><p>package includes:</p><p>1 x one fordged crank set</p><p>1 x bottom bracket</p><p>4 x chainring bolts(set)</p><p>1 x m15 crank screw</p><p>1 x crankset bolt allen wrench</p>