1.90 degree right angle sucker stainless steel design, used on glass, stainless steel plate, quick installation and easy disassembly.2.Used for the support of wine cabinets, display cabinets, bookcases with glass or metal partitions.3.Note: must be installed on a straight horizontal surface.4.The install screw is not included here. SpecificationsProduct Name: Glass Shelve SupportPackage Content: 50 pcs x Glass Shelve SupportMain Color: Silver ToneMaterial: Stainless SteelMaterial Thickness: 1mm / 0.04"Dimension: 15 x 11 x 12cm / 5.9" x 4.3" x 4.7" (L*W*H)Suction Cup Diameter: 12mm / 0.47".Mounting Hole Diameter: 5mm / 0.2"