... ,zinc+coated. 3. All sizes OK 4. 3"-5" wheels 1. 4 Wheels Trolleys For Supermarkets,China Supermarket Push Trolley,supermarket shopping ... get to 24 hours ).4. All sizes are OK.5. Wheels: 3"-5" PU.6. Include all Plastic parts (Hangers, Corners ... protectors, Baby seat), and all colors are OK. 4 Wheels Trolleys For Supermarkets