1,Fit for all types of office chairs 2,Can be widely used in lots kinds of chairs 3,Caster weel had been past BIFMA testing caster wheelItem NO: HYL-071,Color:Black or Gray2,Material: PU3,Pin size:11x22mm4,Wheel Diameter:60mm5,Packing: 200 pcs / carton6,Packing size:55x33x31cm7,Specification:Meet BIFMA StandardThis chair caster performance on carpet or hard floors Function:Fit for all types of ...