The Rampage Pro rear wheel features an aluminum hub shell with precision sealed bearings, 9 tooth driver and 14mm heat-treated chromoly axle. It is laced 3X with 14G spokes and brass nipples to the Stolen Chamber rim, designed with a multi chamber system to increase strength while decreasing weight. - Aluminum hub shell with Heat-treated chromoly axle - CNC alloy cones and Sealed bearings - 1-piece chromoly (9T) driver -Stolen Chamber rim with multi wall design - 6061 Aluminum rim with welded construction, 17mm sidewall height, 36mm wide, 36H - Two Thermalite Drive and Non-drive Hub Guards Included - Cassette style hub and Clutch-style freecoaster hub options - Left-hand and Right-hand drive configurations