330mm Diameter 3 Spoke Flat Dish The OMP Racing GP steering wheel is a 330mm diameter, flat dished steering wheel in black polyurethane for long lasting durability and good looks. Fits all standard OMP, Momo, and Sparco type boss kits. Black finish with black spokes. Diameter : 330mm Dish : Flat Grip Section : Oval 37 x 27mm Grip Material : Polyurethane