... . Latches: zinc alloy, brass. Follower: iron. Housing: electrolytic board Item: Lock Body LB5572Material:++ forend plate: SS201, SS304, iron++ strike plate: SS201 ... : SN, gold, PVD, AC, AB, etc++ housing: silver, black,Technical:++ CC size: 72mm++ backset: 55mm++ follower: 8x8mmNote:++ different sizes of 20x85 ... on providing.++ customer's requirement is available and welcomed. Door Lock Body 55x72