These high-density Polyethylene Ramps are a lightweight, rust-proof alternative to heavier metal ramps. Ramp feature a non-slip surface for excellent traction and safety. The curb ramp weighs 9 lbs. and can support 1,000 lbs. The dockplate wieghs a mere 30 lbs. and can support 750 lbs. Integrated handles make moving a breeze, and it can accomodate a 4" height differential.