Features: brand new and high quality 360 universal rotation: multi-angle rotation, suitable for various scenes, so that moving objects is no longer difficult, with brake design. Large wheel width: The wheel has a large lateral width and strong load-bearing capacity, which makes the wheel more durable and wear-resistant. Circlip plunger: The wheel adopts a circlip plunger with sufficient height, which is convenient for maintenance and replacement of the wheel. Solid bearing: The solid bearing can better connect the wheels, making the wheels turn flexible and fast. Quiet rolling: Let your chair move smoothly and quietly. No more squeaks and crunches. Specifications: Material: Alloy + Nylon Type: A/B A Wheel Height: Approx. 74mm/2.91inch A Wheel Width: Approx. 35mm/1.38inch A Wheel Diameter: Approx. 41mm/1.61inch A Thread Diameter: Approx. 8mm/0.31inch B Wheel Height: Approx. 78mm/3.07inch B Wheel Width: Approx. 40mm/1.57inch B Wheel Diameter: Approx. 50mm/1.97inch B Thread Diameter: Approx. 8mm/0.31inch Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Chair Caster Wheels