Step Chock is lightweight, yet has very stable base dimensions. Dura Crib® interlocking parts fit together for a strong, super-stable box crib. Made from super-tough recycled plastic, Dura Crib® won't break, crush or splinter. Fast, tool-free assembly (except for shoring). Easier to clean, safer to use: won't absorb gas, oil, chemicals or bio-hazardous substances.
See Turtle Plastics Cribbing in action! Turtle Cribbing stands up to abuse that lumber just can't take even from a backhoe! Check out this 4-minute torture test:
Cleaner and safer than oil-soaked wood
Non-splitting and lighter than wood
For use on passenger cars
Made from 100% recycled plastic
Standard: 25"L x 11"H x 5-½"W; Step is 3-½" wide (Weighs 18 lbs.)
Medium: 28"L x 17"H x 4.5"W; base is 9" (Weighs 32 lbs.)