
I like the size of the container to hold keys or small items. I live in a surfing area on the coast and this is a must have for your keys and ID when in the water. It tolerates salty air very well. We buckle it around our roof rack, with a metal loop under the bed of our truck or in my case to a loop on a trailer hitch and all our valuables are well protected. Cup size is approximately 3 inches long and 2 inches in diameter. Converts easily from hanging to a wall lock. We also installed one on the inside wall of a closet in our beach condo to prevent our spare keys from hanging on an unsecured key rack in the front door. I also painted the cover of the coded door black so that it is not obvious that it is a coded lock. The only suggestion I have for this product is a black door cover to cover the combination lock so it is not visible and to use numbers instead of letters as the available combinations that represent real words are very limited . All in all a great product and highly recommended. As you can see in the photos, I put a large bunch of keys with a large carabiner in the container and there was still room.

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