The Ultimate Lightweight Block •4" tall x 8" wide x 16" long •Rated to hold 6,000 lbs •Salt and chemical resistant • Light-weight (only 4 lbs) • Versatile: block campers, trailers, equipment etc... • Easy to move with a built-in handle • Won't hurt your back or smash your fingers and toes •Can be reused •Does not hold moisture– Great around salt water, won't rot or get moldy •Easy to store, stack them up or hang them on the wall •Holds up in any soil condition •Won't break when dropped •Easy to clean •Attractive