Product Descriptions 1. With this toilet lid screw, you don’t have to worry about the instability of the toilet seat. 2. High quality materials, smooth surface, excellent toughness, not easy to break. 3. 4 Toilet Lid Screws Seat Extension Nylon Wavy Nuts Top Fastener. Specification: Material: stainless steel + nylon Stainless steel screw size: as shown in the picture Delivery range: 2× set expansion nuts (2 pairs)