18x8.50-8 Wheel with 6" Offset Hub and 1" Roller Bearings filled with Non-Flat Lite (NFL) foam. Replace your pneumatic wheels for a flat free jobsite. Will fit any piece of equipment with a 1" axle and a 6" space between the cotter pin and washer stop. Remember, the NFL tire does not have a "memory" or flat spot after sitting overnight.