【Package Includes】Each set of toilet seat fixed screws includes: 1*40mm rubber plug, 1*28mm rubber washer, 2*48mm screws, 1*plastic nuts brass, 1* mounting ring 2 * 14mm diameter suitable for installation hole diameter: 1.4-2cm. 【Material】 The expansion screw of the toilet seat is made of high quality rubber and the screw is made of stainless steel. Stainless steel does not rust like metal, is not easy to slide, is not easy to break, and has a longer service life. 【Stop Moving The Seat】 If your toilet seat keeps moving, replace the old fixings with our toilet seat screw fixing, fix the seat firmly and no longer slip on either side. This is a quick, easy and reliable accessory. 【Universal】 Toilet seat attachment fits most standard top hinge toilet seats and helps you replace the broken and old hinge which can be used for holes from 14mm to 20mm. 【Easy to Install】 The rubber seals of the set have a threaded section so you can simply push them into the holes at the top of the toilet