Kwikset 663 Deadbolt Unkeyed Lock, Satin Chrome Round Interior Turn Piece for Front Entry Door, with Latch and Adapter, No Exterior Assembly

NO KEY DEADBOLT: For use on exterior doors that require a high level of security, can only be locked and unlocked from the interior using the thumb turn piece FITS STANDARD DOORS: Fits standard size doors 1-3/8" to 1-3/4" thick, adjustable latch backset from 2-3/8" to 2-3/4" with just a twist during installation International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions., Weight: 0.4375 pounds, Manufacturer: Kwikset