Movo Photo DMA100 Motorized Push Cart/Trailer for Table Top Video Camera Skater Dollies Universal design is compatible with most Table Top Video Camera Skater Dollies including PICO, ePhoto, Neewer, VidPro, Hibo, ALM & More! Adds automatic motion to your table dolly Features dual motors which tow up to 6.5 lbs of weight Forward/Reverse & Variable speed controls Powered by 2 "AA" batteries