4 pcs. Swivel Containers on Wheels Lower Pulley Strong Paste Bearing Wheels Black [Rotary Wheels]: The wheels make it easy to move heavy objects around without noise and won't get in the way when your family is resting. [High Quality Material]: The furniture wheel is made of high quality stainless steel, which is strong, wear-resistant and durable. [360 degree rotation]: Paste universal wheel, good load capacity, you can move furniture or boxes freely without damaging the ground. [Easy to Install]: The sticky swivel pulley is easy to assemble, just stick the wheels to the bottom of the items that need to be moved. [Application]: Swivel casters are suitable for storage boxes, trash cans, pots, bedside tables, small tea tables and other furniture. Size Chart: 4,8 cm x 4,8 cm/1,89 inch x 1,89 inch The package includes: 4 self-aligning rollers