These locks are made of the best raw materials. Also, we offer lifetime guarantee on all locks to prove this claim. The latches and quadrilaterals part of unique locks is made by brass. The forehead is plated Iron and the internal parts of these locks are made of galvanized sheets are ant erosion so it decreases concern for dear customers. Unique switch locks are available in 7 sizes (5.2 ، 5.5 ، 6.5 ،7 ،7/5، 8/5, 9.5)and three colors (silver,gold,MAB). Also our unique locks could pass 72 hours salt spray test and got CE certification of Europe.