Bicycle Union Fiend front 36 hole female hub built on a Sun Big baller rim with stainless steel spokes. Great wheel at a great price! Sun Big Baller rim, Updated version of the classic light weight Big City rim, a well priced and strong rim from sun. The Big Baller rim features the same tried an tested tripple wall construction as the Big city but uses less material were strength is less of an importance. The rim also features Nickel eyelets and a machines sidewall for better braking. Bicycle Union Fiend hub, female axle size 10 mm, Cro mo inner axle, sealed bearing, 36 hole. 8 Oz.