Manfrotto 3067 Heavy Duty Cine/Video Dolly They sell on Ebay for $120 to $140 My price is $80 Key Specs & Features Payload Capacity: 132.28 lbs (60 kg) Wheel Diameter: 5 inches (127 mm) Footprint Diameter: 44.1 inches Weight: 17.7 lbs (8 kg) Compatibility: Features retractable spiked feet accommodations, and works with large still and video tripods