AME Cribbing Blocks are Certified and Tested • Available in Multiple Sizes and Shapes • Interlocking or Aggressive Non-Slip Surface • Non-Conducting Plastic Resists Oil and Most Chemicals • Does Not Splinter Like Wood • Made From 100% Recycled Plastic • Slab Super Cribbing Blocks • 300 Ton Rated • Size: 2" x 4" x 18" • Lanyard Colour Orange