4 small wheels at the bottom of the storage box under the bed equipped with stickable universal wheels, garbage cans, pulleys, storage racks Feature: Adhesive pulley, firmly pasted, sliding and strong load-bearing Quiet and, making the storage box move.Install pulley for easy handling The pulley is small and, attached to the bottom of the, without affecting the overall beauty Adhesive roller, installation, easy handling, compact wheel, does not affect the appearance, good compression resistance, strong and Four wheel design, more stable center of gravity It is not easy to when pushing, and the stress distribution is even and more stable Wooden boards can also be changed into mobile pallets to meet the needs of temporary storage and transportation Say goodbye to laborious handling, clean and move objects faster, compact wheel, good concealment, without affecting the overall appearance Material:Plastic Size:4.5 2.8X1.4cm (about) Package Content: 4 XRoller