Kwikset 660 Deadbolt, Design: Traditional, Security Grade: 3, Number of Cylinders: 1, Cylinder Type: Single, Keyway Type: KW1, SC1, Key Type: Keyed One Side, Re-Key Technology: Smart Key Security, Backset Type: Adjustable, Throw Length: 1 in, Edge Bore Diameter: 1 in, Door Thickness: 1-3/8 to 2-1/4 in, Interior Locking: Thumb Turn, Door Handing: Left, Right, Commercial/Residential: Residential, Zinc, Matte, Black, Includes: (2) Keys
