6pcs toilet seat screw,composed of expandable ball,round cards,screws and washers.It also equipped with 3 pairs disposable hand cover,make it more convenient for you to use. When your toilet seat kept moving,replace old fixings with our toilet seat screw fixing,secured the seat firmly in place and no more sliding off to either side.This is a fast easy reliable fixtures. The toilet seat fixing is suitable for most standard toilet seats with top fix hinge,helping you to replace the broken and old hinge. Expandable ball made of black rubber,could slide into the hole perfectly,plastic washers are not easy to rust and very durable,help to keep fits snugly. You just need these bungs thread them up the screws,so they go into the bottom of the holes and as you tighten the nut up,they get pressurised into the holes and get tighter around the threads to stop the seat from sliding off. Excellent for ensuring the seat never moves again They are far more secure than the old fittings they replaced. No more sliding off to either side, secured the seat firmly in place. Suitable for most standard toilet seats with top fix hinge Can be used for 14mm-18mm holes. replace old fixings with our toilet seat screw fixing. This is a fast easy reliable fixtures. Size: Rubber tube nut: Diameter 14mm (thinnest)-18mm (thickest); Length 40mm. Screw: Diameter 4.7mm, Length 48mm. Metal Washer: Diameter 14mm. Plastic Washer: Diameter 28mm. Material:plastic colour:Black Package Contents: 6 x Black Rubber Tube Nut 6 x Silver Stainless Steel Screw 6 x Silver Metal Washers 6 x Silver Plastic Washers Note: Please allow 1-3 mm error/1-3g weight error and actual product color may vary due to lighting conditions.