Harp Cart Large 12.5 inch Pneumatic (air filled) tires - help navigating stairs while maintaining maneuverability around tight turns. 6" deep tray 20" wide with non slip ridged rubber Handcrafted Maple frame to match your wonderful harp Fits ALL lever harps and any size pedal harp (doesn't fit most lap harps) 2" wide heavy duty straps with heavy duty buckle