Specification: Material: aluminum alloy Color: Black, Blue, Red, Gold (Optional) Number of holes: 32, 36 (Optional) Front Hub Length: 100mm/3.9in Rear Hub Length: 135mm/5.3in Speed: for 7-11 speed cassettes Gross weight (including quick release): 912g Net weight (including quick release): 858g Package size: 20* 7 * 14cm / 7.8*2.7*5.5in Type: Bead Hub Size: front axle 100mm rear axle 135mm Color: Golden/Blue/White/Red Spoke Holes:32 Holes Suitable for: 8/9/10 Speed Material: Aluminum Alloy