A must have for secure on site storage. When empty, it can be moved by 2 strong men and put in a location that can't be accessed by a fork lift/mini digger etc. but once loaded with tools it's too heavy to go walkies. A decent thickness of steel and great hydraulic hinges make this a recommended purchase. I leave several high value items in mine and have confidence that they'll be there in the morning. I am seriously considering purchasing another 2 as everything now gets chucked in. Also they're very handy for dry storage of bagged items like cement/ plaster etc.