... used in lots kinds of chairs 3,chair castor had been past BIFMA testing chair castorItem NO: HYL-081,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 ...