Made of lightweight high strength industrial aluminum. Height 42", width 24", depth of tray 5", and weight 13 lbs.. 12" pneumatic tires, inflated with standard tire pump. Kickstand for stability. 1" wide nylon neck strap and 1 1/2" wide nylon body strap. This trolley will work with all brands and sizes of pedal harps and most large lever harps measuring a minimum of 39" from the floor to the knee block of the harp. This trolley is designed to ONLY move harps. More information can be found in our video on YouTube https://www.youtube.com/watch?v=17YNqa41xXc