Our cribbing keepers are made with 6,000 lb. 2" wide industrial strength webbing, heavy duty Velcro, and steel adjuster buckles and NEW 3M reflective trim for enhanced visibility. This set is designed to be used with 6 4x4 cribbing pieces at 24" lengths. The handle strap makes it easy and efficient to carry up to 12 pieces at one time! The adjustable Velcro closure and steel adjuster buckle allow for a secure, tight grip around the cribbing pieces.