The extruded aluminum octagon roller axle telescopes to the exact width of your truck. The kit includes: Through Bolted 7 in. folding crank with locking lever, tarp roller, a 20 ft pull-rope, 2 pair of rope tie down hooks, and two rubber tarp straps with S-hooks. The Tevlar black mesh tarps have brass grommets ever 24" and are reinforced with double-stitched hems.