Features: Rotation: 360° universal rotation, lightweight, multi-angle rotation, suitable for all kinds of scenes, so that the moving object is no longer difficult Widen: The width of the wheel is large, stable, the width of the wheel is large and the bearing is strong, so that the use of the wheel is more durable Clip Spring Insert Rod: The wheel adopts clip spring insert rod, the height is enough, convenient maintenance and replacement of the wheel. Protective: Wide and thick dustproof board, wheel style dustproof board is optional, effective daily protection of wheels. Solid Bearing: Solid bearing is better connected to the wheel, enabling the wheel to turn flexibly and quickly. Specification Material: PU Color: Black Caster dia: About 50mm/1.97inch Caster width: ABout 59mm/2.3inch Installation height: About 56mm/2.2inch Insert rod dia: About 11mm/0.4inch Insert rod height: About 22mm/0.87inch Package included: 5pcs x Chair Caster