1,Fit for all types of office chairs 2,castor widely used in lots kinds of chairs 3,Castor weel had been past BIFMA testing castorItem NO: HYL-051,Color: Black2,Material: Nylon 3,Pin size:11x22mm4,Wheel Diameter:50mm5,Packing: 200 pcs / carton6,Packing size:52x31x28cm7,Specification:Meet BIFMA StandardThis chair caster performance on carpet or hard floors Function:Fit for all types of office ...