Two units can be connected together and work as a creeper or a dolly for moving other lightweight appliances, furniture, etc.
Mobile Tire Dolly Roller Moving Wheel Stand Cart Storage Base Furniture Garage
Adjustable Wheel Dolly Tire Dolly Cart Tire Lifting Tool with Adjustable Roller
2/4pcs Car Wheel Dolly Roller 1500LB Hydraulic Tire Jack for Vehicle Positioning
