Built-in Soft-close Hinge System: The toilet seat and lid features Gentle Closing: seat and lid lower slowly to avoid loud slamming. Safety: protects against finger pinching and accidental bumps. Durability: reduces wear and tear on the seat and toilet bowl Fits Elongated Toilet Bowls: This oval toilet seat cover is compatible with TOTO/Kohler/Gerber/American Standard/Crane/Eljer/Caroma, and more, replaceable for most standard elongated toilet seats; Dimensions: Elongate length of 18.5 inches; Mounting hole distance of 5.5 inches; Please confirm that your toilet is oval-shaped before purchasing High-Impact Gloss Polypropylene: Glossy, stain-resistant surface for long-lasting durability. Sanitary design: Resists oxidation, fading, and dirt buildup over time. Stability: Rubber pads ensure the seat stays securely in place Two Types of Screw Accessories: Included all installation hardware: fix it from the bottom with a white plastic screw or from the toilet top with a black insert expansion metal bolt; We also provide two rubber pads to protect the hinge from slipping Humanity Design: Great for households seeking a long-lasting, quiet, and easy-to-install toilet seat compatible with most elongated models. The stain-resistant material and soft-close hinge make it a practical choice Universal Elongated Round Toilet Seat Replacement