EASILOK Twist to Lock deadbolt Lock keyless,Either Keeping Front Door Lock Locked as Well Unlocked Status as You Want by Child Safety

Just a simple twisting needed, you can either twist to lock the deadbolt from both inside and outside the door or twist to unlock the door from inside without any keys. An invented Dead-Button that works as both Night Latch and Child Safety Lock on the interior knob. No need drilling, No more screw holes on your door. Never fades or rusts due to its lathe finish after 304 stainless steel casting. Built like a tank with high quality.