The 5.5 foot ramp is made from 2x3's and a piece of 3/8" plywood. The sled uses 1/2" plywood and short pieces of 2x3's. Candle wax was used to lubricate the ramp and the sled. Two Ranger tailgate 1/4" star screws are used to prevent the ramp from slipping off. Note the short piece of 2x3 underneath the ramp to prevent the ramp from being lifted into the truck. The Dewalt DP3750 is too heavy for me to lift. Works like a charm.