AME 15257 Cribbing Block Set Includes 28 Pieces — (27) 15230 Cribbing Blocks 6” x 7” x 24” and (1) 14468 Jack Plate 24” x 24” x 2”, 100 Ton Capacity • Certified and Tested • Rated Up to 298,000 Lbs Depending on Configuration • Provides Superior Crib Stability Compared to Standard Hardwood and Softwood Products • Does Not Splinter or Absorb Most Fluids • Interlocking or Aggressive Non-Slip Surface • Carry Lanyards • 100% Recycled Plastic • Can Be Used With Lincoln Log Mating or Pyramid Mating