... : Black, white, Red, Yellow etc. Screw office chair plate caster wheel:Product Feature:1. Dia: 78mm;2. Color: Black, white ... , Red, Yellow etc;.4. Material:plastic+iron;5. For furniture ,electronic and other moving equipments. Packing:4 pieces ... surface treatment;3. Customized specifications are available;4. Competitive Price; 5. Superior Quality, TUV CERT ISO9001:2000 quality assurance; 6. ...