Including: 2 plastic bolts, 2 plastic washers and 2 nuts; Meet the need for replacement parts and enrich your inventory. Size: toilet seat bolt is 2.83 inches long and 0.7 inches in diameter, which is applicable to most toilet covers. Please confirm the size before purchasing. Simple installation: You can use a screwdriver to tighten it from the top. Or directly tighten it from the bottom by hand without using a screwdriver. Safe and durable: the main body is made of stainless steel, which is durable, corrosion resistant and can be used for a long time. Suitable for holes with a diameter of 14 to 20 millimeters.Suitable for toilets with a toilet installation position less than or equal to 20 mm. Includes 2 plastic bolts, 2 plastic washers and 2 nuts; meet the need for replacement parts and enrich your inventory. Toilet cover bolts are 2.83 inches long and 0.7 inches in diameter, fits most toilet covers. Please check the size before purchase. Can be tightened from the top with a screwdriver. Or just hand tighten from the bottom without using a screwdriver. The main body is made of stainless steel, durable and corrosion resistant for long term use.