Steel, Parking loct Use . Name : Manual Parking Lock Model :CAS-CWS-2 Name : Manual Parking LockModel :CAS-CWS-2Spec.:1000X200X80Xh480mmMaterial : high-quality rolled steel pyrolytic ... coating .Weight:9kgs/pcsFunction :can protect your parking space .can be used in parking lots , uptown ,office building , commercial building,hotel, airport ...