EASILOK Deadbolt Deadbolt Lock,Twist-to-Lock Keyless Round Exterior Keyed Front Entry Door（Mechanical Lock）,Single Cylinder Dead Bolt，Silver

• KEYED Single Cylinder Dead Bolt :Use on doors requiring a high level of security, Twist-to-Lock deadbolt lock without any keys mechanically(this is not an e-lock): A simple twist is all it takes, you can ask your family or friends lock the door up when you take the keys away（but you have to unlock the door by keys).
• An Anti-Mislock Button built-in on exterior knob which Safeguard against unintended twist mechanically, ensuring you have full control over the "twist to lock" feature; That means: when you don’t need the "twist to lock" mechanism feature you can lock the Anti-Mislock Button,then the "twist to lock" feature disappeared.
• EASY INSTALL: Do it yourself, installs on any standard size door in minutes with just a screwdriver, no special tools needed, detailed directions provided
• Twist-to-Lock mechanism features especially convenient for elder people, children,disabled people,people with hands full on apartment front door, garage door,side door,shed door,basement door, back door of apartment and resident house.FITS STANDARD DOORS: Fits standard size doors 1-3/8” to 1-3/4” thick, the latch backset is adjustable from 2-3/8” to 2-3/4” with just a twist during installation
• Building upon the mechanical classic Deadbolt design, we've added some fantastic new features which tailored gives you more options. This Deadbolt offers a range of selectable functions.

Twist to lock deadbolt without any key: a Mechanical Deadbolt Lock This is a subversive design of deadbolt lock underlying root technology in the lock history. Traditional mechanical deadbolt lock using keys to lock the doors. Within only 0.5 second, by twisting the knob without using any key, the door was locked. Backset: 2-3/8"or 2-3/4"(60mm or 70mm). Door thickness: 1-3/8"to 1-3/4"(35mm- 45mm). Package content ---1 Deadbolt lock set ---2 Keys ---User Manual Warranty and Support If there is any question or problem in using our locks, please feel free to contact us.