Specification Brand : HOUSEEN BulletPoint1 : 【What You Will Get】You will receive 4pcs expansion screw with rubber sleeve, designed for toilet seat hinge. The screws are embedded in the rubber expansion tube, which is stronger and more durable. BulletPoint2 : 【Excellent Material】Expandable ball is made of black rubber, white screw with solid brass thread inside is made of stainless steel material, long screws and gaskets are made of stainless steel, soft washers are made of Plastic. Sturdy and durable, rustproof. BulletPoint3 : 【Non Rust Design】 Plastic washers will not rust, better than metal ones. When you tighten the bolts the washers crush down into the holes, you need to be careful not to tight the bolt so much it pushes through the washer. BulletPoint4 : 【Easy to Use】Push the toilet seat fixings into the toilet installation hole and tighten it. Turn the screw clockwise to increase friction, greatly enhances the anchoring force, and finally fixed stability. BulletPoint5 : 【Size Details】Screw rod length is about 45mm/1.77inch, rubber sleeve length is about 40mm/1.57inch, fits most standard toilet seats with a top fix hing, replaces broken or old toilet seat hinges. Color : Black ExternallyAssignedProductIdentifier : 3851552276552 ItemName : Toilet Seat Hinges Screws, 4Pcs Expanding Rubber Bolt Top Nuts Set for Top Mount Toilet Seat Tightening Kit Replacement, Universal Toilet Seat Blind Hole Fixing Kit ItemPackageDimensions_Height : 0.97 inches ItemPackageDimensions_Length : 1 inches ItemPackageDimensions_Width : 1 inches ItemPackageQuantity : 1 ItemShape : Elongated ItemTypeKeyword : toilet-seats Manufacturer : HOUSEEN Material : Rubber ModelNumber : HK01351A1 NumberOfItems : 4 OperationMode : Manual PartNumber : HK01351A1 ProductDescription : Specifications: Color: black Material: stainless steel+rubber Size: (Screw rod L x rubber sleeve L)about 45 x 40mm/1.77 x 1.57inch