ABEC 11 Skateboard Wheels - Flywheels 76mm/81a.A big, smooth, tank-like wheel for rolling over everything in its path. Features - Height: 76mm - Durometers: 81a - Width: 52mm - Contact Patch: 44.0mm - Hub: 45mm - Hub Setting: CS Centerset - Depth of Urethane: 15.5mm - Edges: Round - Disciplines: Downhill, Longboarding, Downhill racing - - Bearings and spacers not included. - Sold in sets of 4