Pair Aviation Chock 21" Yellow Chock - Model AC3521-P

~Impact-absorbing. ~High load-bearing capacity. ~Resistant to aircraft fuels, oils, and lubricants. ~Will not rot, crack or splinter like wood. ~Standard with 1/2 in. x 24 in. replaceable polyester rope lanyard. ~21" Yellow Chock Body 24" X 1/2" Nylon Rope. ~Molded-in high-visibility yellow color. ~1 Pair.