Uxcell 90-Degree Metal Glass Shelf Mounting Holder Support, 40mm x 40mm, 10 Piece Product name : glass shelf support; material : metal Screw hole dia. (Each) : 4. 5Mm/ 0. 18"; total size : 40 x 40 x 1. 8Mm/ 1. 6" x 1. 6" x 0. 07" (lwt) Color : silver tone Net weight : 145G Package content : 10 x glass shelf support