Kwikset 971Pvlrct Prava Lever Keyed Entry Interior Pack - BlackSingle Cylinder Keyed Entry (Interior Only): Single cylinder interior packs complete the interior mounting of a working mechanical lock set and require an associated exterior single cylinder trim for installation. Includes a thumbturn for the interior side of the deadbolt and a knob or lever for the inside of the door. Features: Tested to exceed ANSI BHMA Grade 2 security requirements Constructed of high quality materials for durability and