Material: Rubber (Expanding Ball) / ABS Plastic (Round Boards) / Stainless Steel (Screw) Size: Expansion Ball Diameter: 1.8cm/0.7inch (unexpanded state) Length: 4 cm / 1.57 inch. Suitable for 14-16mm hole for 2 toilet seats Universal fitFits most standard toilet seats with top hinge Easy to installThe eyelets in kit rubbers have a threaded section so you can just push them into the holes at the top of the toilet bowl and when you tighten the screw it expands and tightens in the hole, no need for a bolt to the other end of the screw Wide applications: ideal for broken or old toilet seat hinges Specification Product Name:Toilet Seat Hinge Fixings Material: Plastic+Rubber+Stainless Steel Color: Red/Blue Quantity: 2 Pieces Color: black and white available Size: as the picture show Package: plastic bag Feature : The expansion nut is made of high quality stainless steel and nylon , used to fix the toilet lid and is durable Rubber sleeve: 40mm / 1.57in, metal screws: 50mm / 1.96in, suitable for most toilet seats standard UK size with top hinge Suitable for 14-16mm hole The rubber bungs slide snugly into the holes and when you tighten the bolts they tighten in the holes for a good fit. Please do not overtighten the bolt Package includes 2 x Toilet Seat Fixing