Plastic Moving Dollies with Handle and Polyolefin Swivel Casters - Capacity 500 lbs. These Plastic Moving Dollies with Handles are made to move boxes, crates and office equipment easily. Strong polyethylene construction will not warp or splinter. These moving dollies roll smoothly on (4) polyolefin swivel casters. All moving dollies, cart and hand truck sold separately. Please call for availability on bulk orders of quantity 5 or more of these moving dollies.