This three sided triangular metal protector is pressed from a single piece of metal so there is no open side to assist with positioning. The corner and the folds are rounded (as opposed to sharp) and the edges are also curved. There is a hole at the centre towards the edge of each face to facilitate fixing with pins or nails. Material: Metal Net Weight: 47g Package Content: 8 x Box Corner Protectors Some Screws Product Name: Box Corner Protector Hole Diameter: 4mm/0.16 Size: 25 x 25 x 35mm/1 x 1 x 1.4 (L*W* Radian) Protective corners for boxes and other household items.