The Mega-Truss Dolly XL with Inside Couplers now has the most requested upgrade—four wheels and a wider base. The four castors provide extra stability when moving the truss dolly over obstructions and allows for moving and unloading truss without strapping for each move. The attached Mega-Couplers fasten to the truss’s perpendicular cross bars, securing the load. Convenient handle cutouts on both sides of the dolly allow for carrying the dollies after unloading. The Mega-Truss Dolly XL with Inside Couplers has the same e-track tie downs to hold the truss as the traditional Mega-Truss Dollies. The XL Mega-Truss Dolly with Inside Couplers is laser cut and formed from 5052-T6 aluminum material. Castor capacity is 3,200 lbs.