Diameter of hockey puck size. super strong I took a magnet out of a locked mailbox and noticed that it was quite large. It was very well wrapped in bubble wrap. I opened the package it was in, my keys were stuck to it. Oh boy, that's strong, I thought to myself, so I removed the keys. When I wanted to mount the magnet, the screwdriver got stuck in it. I removed the smaller magnet I used from the gate body - the other magnet I used glued to it. I have a dog-ear fence that I hide my trash can in outside - it has a metal gate frame that I wanted to keep closed. The problem was that it's on a small hill; The gate when not latched won't stay in the closed position without being latched so I used it to hold the gate like a closet door magnet and it keeps the gate closed. It worked very well. I believe this has many uses, including use to recover metal objects in tight spaces. It's almost too strong a magnet because I had to pull away from any metal object it got too close to. It's incredibly durable, especially the top and bottom rather than the narrow sides. WARNING: Be careful not to pinch your hands when holding it near metal objects - there is a risk of pinching your fingers. ==== ====I am very happy with this magnet and would recommend it.
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