Specifications Hign-concerned Chemical:None Type:MTB Bike Hubs Size:135mm Number of Holes:32 holes Axle:qr Freehub:HG Position:Front + Rear Braking System:Disc Brake Spoke Hole:29 - 36 Material:Aluminum alloy Category:Bearing Hub Hub Hole Number:32 holes 039 MTB Bike Hub Front Rear Bike Bicycle Hub 6 Pawls 114 Clicks Cycling Hub For Shimano 8 9 10 11 12 13Speed Sram SX NX 12S Shell materialAl6061-T6&Aluminum Alloy case;AL7075-6 axis Color: Red/Black/Golden/Blue/Titanium Freehub body : HG 11 speed / MS 12speed / Sram XD 12 Speed Spoke : 14G*32H O.L.D : Front 9 / 15*100mm Rear 10*135mm / 12*142mm Weight : Front 172.2g / Rear 281.5g (Total: 454+(-)5g) Bearing : Front 2 / Rear 4 Pawls : 6 Pawls 3 Teeth 114 Click We are factory distributors. hub always adheres to the principle of customer first, and its products have good waterproof performance, light weight and quality assurance. For the sake of consumers, each product has a shelf life of one year to ensure customer service.