Uxcell 4.5mm Mount Dia Suction Cup Base Glass Shelf Support Bracket, 12 Piece Product name : glass shelf support; material : metal, plastic Install screw dia. : 4. 5M / 0. 176"; suction cup dia. : 13Mm / 0. 51" Total size : 18 x 13. 8 x 18Mm / 0. 75"; x 0. 54"; x 0. 75"; (lwh); color : silver tone Net weight : 39G Package content : 12 x glass shelf support