Quantum Storage HD30-2DR Two 30" Skates, One with Drift Resister

Quantum storage hd30-2dr two 30" skates, one with drift resister this kit includes two 30" skates for use with all 18" deep shelf units. simply bolt to bottom of shelf posts and place on v-tracks. one skate includes an adjustable drift resister to slow down and minimize drifting of shelving for uneven floors.