Sure-Loc Hardware | Ridgecrest Modern Deadbolts Matte Flat Black Single Cylinder Deadbolt. Solid forged brass housing. Cut Resistant bolt with hardened steel rolling inserts. Adjustable 2-3/8 in - 2-3/4 in (60-70mm) backset. Type: Single Cylinder. Hardware Finish: Flat Black Matte. Number of Cylinders: 1 Re-Key Technology: Traditional . For Use with Entry Door. Keyway: KW1. Backset Size: Adjustable: Fits Door Thickness: 1-3/8-in to 1-3/4-in