Schlage Bell Bright Brass Knob and Single Cylinder Deadbolt is for heavy-duty residential and light-duty commercial doors. It includes one No.360 single-cylinder deadbolt and one No.F51 Bell entry lockset, both deadbolt, and entry are keyed alike. Deadbolt has a 7/8 inch housing and 1-inch throw with concealed hardened steel roller to prevent cutting or sawing.