Main Features:Ultra-Versatile Utility Cart for Transporting Wide Variety of GearHeavy-Duty Welded Steel Frame with Non-Skid Tape SurfaceTransforms into Eight Different Configurations for Carrying a Wide Variety of EquipmentNon-Pneumatic Tires for Hassle-Free OperationCargo Platform Length Extends from 30 52 (76.2 cm 132.1 cm)500 lb (226.8 kg) Load Capacity Perfect for Amps, Guitars, Speakers, and Other Heavy GearUltra-Rugged 5 (127 mm) Front & 8 (203 mm) Rear Caster with No-Flutter Design & Durable, Long-Lasting Tread Prevent Unwanted Noise & Cart WobbleEquipped with Stair Climbers & Folding Handles for Easy TransportExterior Dimensions (Compact & Collapsed): 36 x 18 x 10.75 (L x W x H) (91.4 x 45.7 x 27.3 cm (L x W x H); 29 lb (13.2 kg)Spring Tightening Knobs & Spring Clip Safely Secure Cargo Platform LengthSpecifications:Interior DimensionsLength 29.50″Width 12.25″Height 0.00″Exterior DimensionsLength 36.00″Width 18.00″Height 10.75″Weight 29.00 lbs