Reflex ZigZags skateboard wheels 66mm/89a The perfect sized Tight Slalom wheel with improved rebound reflex formula from Abec 11. Easy to pump up to speed. Insane traction and great responsiveness in tight steering situations Features - Height: 66mm - Durometer: 89a - Width: 51mm - Contact Patch: 48.5mm - Hub: 25mm - Hub Setting: OS Offset - Depth of Urethane: 20.5mm - Edges: Square - Disciplines: The quicker smaller hard-carving, pumping and slalom specific wheel. 78a for carver-cruisers. Reflex formulas for Slalom racing. - - Bearings and spacers not included. - Sold in sets of 4