5Pcs/set 2 inch transparent double wheel furniture casters office chair universal wheel computer chair pulley roller gaming chair wheelFeatures:* 5pcs per box: This box is equipped with 5 casters, which can be used to mount many types of chairs. These rollers are made of high quality durable material. So you don't have to worry * 360 Degree Rotation: The soft rolling rubber surface of these wheels ensures they won't leave any nasty marks on the floor. Safe to use in the office, at home, or anywhere with a 360-degree rotation.* Simple Installation: These wheels are very easy to install and use. So you no longer need to worry about calling anyone else to match those wheels * Protect Your Floor: Each 2" wheelchair bag is wrapped in soft polyurethane rubber, guaranteed not to scratch any surface. Glides silently on carpet, tile or hardwood without scratching, protecting your floors.NOTE:Office chair caster wheelsUniversal size 7/16 * 7/8Incompatible for IKEA chairsSpecification:Name: Office Chair CastersMaterial: Metal + PUWeight: 700lbsWheel diameter: 50mm/2"Wheel width: 56mm/2.2"Installation height: 59mm/2.3"Pole Diameter: 11mm/0.43"Pole Height: 22mm/0.87"Color: Transparent + BlackPacking included:5 * Office Chair CastersNote:1. Due to manual measurements and slight color variations, please allow 1-3 cm (0.4-1.18 inches) difference to suit different display settings.2. Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand.