The Safety 1st Deadbolt Door Safety Lock is the first child safety solution for deadbolt locks on doors. It easily prevents your young child from opening the deadbolt lock on your front or rear door and venturing out. It has a clear cover that encases the lock assembly. Squeeze the two gray side tabs and rotate to operate the lock. This double action thwarts young hands. Installs without removing the deadbolt in 3 easy steps that won't damage your door. One per pack.