Pair of unique individual floating shelf brackets for solid wall or stud fixing with up to 40KG weight capacity per pair, when fixed tightly into a solid wall, the brackets can hold a 250mm depth shelf. The solid steel support rod is in total 168mm long x 12mm diameter, with 65mm of the bracket rod length threaded for fixing into the wall and 100mm into the shelf. Suitable for custom manufactured floating shelves of thickness 20mm (2cm) and above. (Can be used to fit deeper shelves but weight capacity decreases as shelf depth increases) Use a minimum of 2 brackets per shelf, but we recommend at least one bracket is used every 500mm spacing in a solid/brick type wall, or on every stud in a cavity type wall. Not suitable to fit to steel studs or directly into drywall (plasterboard) type wall sheet.