From The Anvil 51722 Aged Bronze 0.5"" Rebate Kit for Deadbolt

Designed for use when fitting a deadbolt to rebated doors (doors that overlap one another when closed).\n\nEasy to fit and suitable for use on doors 40mm to 50mm thick.\n\nA perfect match for our Aged Bronze hardware.\n--Rebate Set: 1/2\"" (13mm)