Energy Suspension 2in /50 Mm Wheel (4 Ea) - Black - 9.9169G

Made of superior formulation Hyper-Flex(TM) polyurethane and uses high precision bearings. Experience little or no rolling resistance! The unique polyurethane material and design allows smooth, unimpeded rolling for indoor/outdoor ease of movement over cracks, washers, misc. debris, etc.
Installation Instructions
Installation Instructions