EXCELLENT MATERIAL Expandable ball is made of black rubber, white screw with solid brass thread inside is made of nylon material, long screws and gaskets are made of 304 stainless steel, soft washers are made of ABS plastic. Sturdy and durable, rust-proof and corrosion resistant, better than most plastic fixings.
Non-rusting design: plastic washers will not rust, better than metal ones. When you tighten the screws, the washers press into the holes, you need to be careful not to tighten the screw so much that it pushes through the washer. The screw has a solid brass thread, which is non-slip and rustproof.
Package contents: you will receive 4 pairs / 8 pieces toilet seat screws, one made of rubber and one made of nylon to meet your different toilet connections and bathroom styles.
Universal fit: these toilet seat fittings are suitable for 14-18 mm holes, ideal for broken or old toilet seat hinges. Fits most standard toilet bowls. Excellent for top mounted toilet seats and wall mounting.
Easy to Install You can slide the toilet seat screws into the toilet mounting holes, the nut will expand into the holes perfectly slide when you tighten the screws, easy to install and toilet seat stabilizer save time.