SET OF 4 wc glasses: - The WC glasses include 2 pairs of toilet seat flap fixings. PRODUCT SIZE: - The toilet glasses are made with silicone sleeve and a stainless steel screw, silicone handle length 40mm, width 18mm, silicone gasket diameter 28mm, screw length 48mm, diameter 5.7mm, gasket 14mm. UNIVERSAL SIZE : - The screws are universal for the toilet when they enter the holes of standard toilets and / or with blind holes. When tight, the rubber expands and completely blocks the shelf. EASY TO INSTALL: - The wc glasses fixings are very simple to assemble and truly universal, installed in seconds without problems. EXCELLENT MATERIAL : - The glasses for flap attachment have a high quality with a smooth surface. Good screw hardness, not easy to break.