Manufactured from 6061-T6 Billet Aluminum Basic rack includes two pontoons, adjustable bridges, up-ramps, front roll-offs & steel leveling feet. For 2.5" (64mm)Pads.4,000lb (2,000kg) Capacity8" Ramps & BridgesUltra Low Deflection Scale Pad Pockets at max CapacityHoneycomb Filled Center for an Ultra Light-Weight Pontoon CoverBillet Track Width Mounts Adjustable in 2.5" (64mm) IncrementsSolid Six Foot Design that Sets Up Fast & Easy26 Adjustable Steel Feet Standard for Increased StabilityWheel Base Adjustable from 90" to 120" (2,286 to 3,048mm)Track Width Adjustable from 52" to 66" (1,321 to 1,676mm)Roll-Off Length: 18" (457mm)Pocket Dimensions: 22" x 15.25" (559 x 387mm)