Meet replacement parts needs and enrich your inventory. The main body is made of stainless steel, which is strong, and . Easy installation: Tighten from the top without using a screwdriver, or directly from the bottom. The rubber pads slide ly into the holes, and when you tighten the bolts, they squeeze into the holes, creating a nice snug fit. Please do not overtighten the bolts If your toilet seat keeps moving, use these toilet seat retaining screws to replace the useless plastic insert with a top seat. Colour:Black & Silver Material:Stainless steel+Plastic Size:12x55mm Package Contents: 16 x Bolts 16 x Nuts 16 x 18mm Gaskets 16 x 28mm Gaskets Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.