Minimum order quantity: 5000 pcs · Material: cast iron · Supply capacity: 200000 pcs/month · Ports: Tianjin, Qingdao, Shanghai, Guangzhou… · Payment methods: T/T, L/C, D/A, D/P · Size: M8/M10/M12 5/16″ / 3/8″ / 1/2″ Other sizes can be customized