Turtle Plastics Dura Cribbing is available in numerous shapes and sizes; including Wedges, Blocks, Lincoln Logs, Super Crib Blocks, Lock Blocks and Step Chocks. Most Dura Cribbing is available in two colors, black or yellow. Unlike traditional wood cribbing Turtle Plastic Dura Cribbing is stronger and more effective. The strong plastic is stable and will not absorb oils or other hazardous fluids. The cribbing does not split and in most cases is lighter in weight then wood based cribbing. Each cribbing piece includes a rope handle or molded hand grip for easy carry and deployment.