HUB RR WM SB1000 STL BO SF 5-6s 28x135x80g CPSteel hubs. Loose ball. Bolt-on. Item Specifications: Material, Stl, Color, CP, Brake Type, RIM, Use, RR, Hub Drilling, 28Hx.080g, CTF-R, 21.5, Spacing / Axle, B/O 3/8, LTF-L, 35, CTF-L, 32.5, LTF-R, 46, PCD-L, 45, Gears, 5/7s FW, PCD-R, 45, OLD, 135,.