SolidTrax Universal Track Dolly DIY Wheels - Set of 4 - Works with Modus System

Build your own track dolly with the SolidTrax quad wheel assembly. It is comprised of 4 polyurethane wheels and 8 precision bearings. The wheels are mounted to a thick aluminum bracket and fitted with dual ball bearing sets for smooth rotation on straight or curved tracks. Fits tracks sized 3/4 to 1-1/2 inch. When mounted to the Modus platform, the track spacing will be 7-1/4 inches (184mm). Specifications Mounting: 3/8" Bolt Capacity: 70 lb (32 kg)  Style: Track Track Size Compatibility: 3/4" - 1.5" (1.9 - 3.8 cm) straight or curved Wheel Size: 53 mm poly Material: aluminum bracket, polyurethane Wheels, stainless steel ball bearings Finish: Powdercoat UPC: 013964711677 Steel, aluminum or rigid PVC piping is recommended.