Fangrui Product Details [high Security Lock Box]-the Wall Of The Key Lock Box Is Made Of Durable Materials. It Can Protect Your Key Storage Box From Dust, Rust, Sunlight, Rain And Snow, Ensuring Long-term Use. Outdoor Wall Installation. [adjustable 4-digit Combination Lock Box] The Outdoor Key Box Is A Combination Of 4 Digital Adjustable Metal Wheel Locks. It Can Provide 10000 Passwords. You Can Set And Reset Your Personalized Passwords And Change Them Regularly To Improve Security. [note] Dont Forget The Password, Otherwise You Will Not Be Able To Open The Lock Box. [easy To Use And Install] The Combination Lock Box Provides 4 Screws, 4 Nylon Expansion Plugs And User Manual. Just Insert Screws And Plastic Expansion Plugs, Then Drill Them Into A Wall Or Other Hard Surface, And Make Sure They Fit Tightly. Clear Instructions Are Easy To Follow (including Installation Kits) And Even Easy To Install, Suitable For Non-diyers. [portable Small Lock Box Design] Internal Size: 2.7 X 1.1 X 3.25 Inches (about 7 X 2.9 X 8.3 Cm); Ve