Specifications Product Name: WC seat screw Material: Hose nut: black rubber. Round card: ABS plastic. Screws: stainless steel. Gasket: stainless steel. Dimensions: Rubber hose nut: diameter 14mm (thinnest) -18mm (thicker); length 40 mm. Screws: 4.7mm diameter, 48mm length. Metal washer: 14mm in diameter. Plastic washer: 28mm in diameter. Features Package includes: 6 × black rubber tube nut 6 × silver stainless steel screws 6 × silver metal washers 6 × silver plastic washers 3 pairs of disposable hand covers features Why not use this method to secure the toilet seat? If your toilet seat flies every time you sit down, then this is for you. Great seats ensure they don’t move. They are much safer than the old replacement accessories. Stop sliding to one side or the other, fix the seat in place. Fits most standard toilet seats with fixed top hinges Can be used for holes from 14mm to 18mm. Replace old fixtures with our toilet seat screw fixings. It is a quick, simple and reliable fixing