Check the listing for details. Bulldog Concrete Hanger - (3-Pack) - Large. Condition: New. Listed at 1.30 USD. Large Hanger for concrete and cinder block walls. These do not look like they would work, so we tried them on a concrete block wall. They work great. These are for light weight pictures, etc. weighing less than 2 pounds. 1 1/2" long and 3/4" wide at the top. Place this hanger against the wall and drive the pins flush to the hanger and you're done. Retail packaged, 3 pieces per unit with instructions. Manufacturer Info: Bulldog is a brand that champions the little things. When you're in need of a tiny, thoughtful and extremely convenient item, chances are Bulldog has it streaming off of their assembly lines. These Bulldog Hardwall Picture Hangers are used for hanging paintings and lightweight items on concrete walls or cinder blocks. Bulldog Hardwall Picture Hangers: Used for hanging paintings and lightweight items on concrete walls or cinder blocks Listing and template services provided by inkFrog