REAR HUB UFO Hub series are both petal-flange design which can increase spokes rigidity. And both have an extra special function – the grease filling port. You can easy to access for maintaining the ratchet without disassembling. Also you can decide the hub operating sound to be softly or loudly, if you fill more or less grease. Our main body of hub is interchangeable, that’s mean UFO R-148 BOOST can change the Cassette into SRAM-XDR. But the newest MICRO SPLINE is special specification, so it can’t do that. Please double confirm what types of cassette you need before order. DETAIL • Material: Aluminum with CNC Machined of Body / Aluminum 7075 of Hollow Axle / Aluminum 7075 of Side Cap • Spoke Hole: 32H, 6 pawls, 36 ratchet teeth • O.L.D. : 142mm*12mm • Weight: 294g • Color Available: Black Please visit our website at http://www.ecomtb.com.my OR https://shopee.com.my/eco_mtb ** There is 1-3cm errors due to manual measurement. Please kindly understand. ** Actual product colour may slightly vary due to photographic lighting sources or your monitor settings. ** WE DO NOT DO COD ** ONLINE ONLY ** We support original products only. ** PRICE INDICATED IS ALREADY BEST PRICE, EXCLUDE COURIER