Elements by Weiser(R) products offer an unbeatable combination of function and fashion. This single cylinder deadbolt is operated by a key on the outside or a thumb turn on the inside and has 2 interchangeable faceplates (round and square corners). The rich tones of matte black add the finishing touch to this product. Designed for exterior doors where a keyed entry is required, this deadbolt features SmartKey Security(TM), which protects against advanced break-in techniques and allows you to re-key your lock yourself in seconds. This exclusive re-key technology is compatible with Kwikset (KW1) keyway or (SC1) keyway options.