Bolt4 Digit Combination Door Latch Home Security,Front Door Locks for Kid Child Childproof,Home Reinforcement,Set Your Own Code,Thicken Solid Zinc Alloy Simple to use and install, 4 Digit Combination the Combi-Bolts up to 10000 possible combinations give high quality security for indoor and outdoor applications. This deadlock is constructed of solid metal and installs in minutes with the one way screws included with the lock. The body of this locking device also has a rust resistant coating and will last for years to come Security doesn to managing a dozen keys and replacing locks. The Combi-Bolt features a slide barrel bolt and gives the user versatile options when mounting the sliding fence hardware so you can choose from a recessed or flush mounting.