Redco DURA CRIBWhen seconds matter, wood just doesnt hold up. Redco Dura Crib offers a more stable and longer-lasting alternative to wood blocks for cribbing and blocking. Redco Dura Crib has an aggressive patterned, slip-resistant pyramid locking surface for added stability and safety to first responders and civilians. Redco DURA CRIB is ideal for stable cribbing, chocking, bracing, and shoring. 2 surfaces in one cribCribs lock together for stabilityAdjusts to slopePyramid design securely locks at any angleThree side notches interlock for secure stackingNon splittingResists oil, gasoline, and blood absorptionBuilt-in lanyard