Is a toilet cover fixed insertion expansion screw Ceramic bore is suitable for fixing toilet cover It is a general purpose toilet cover screw expansion, as long as the white circle diameter gasket 27-28.5mm Durable alloy, real material, solid, corrosion, rust, detail The hinge is made of imported alloy material, smooth surface, smooth visual, no hand, guarantee quality and durability, Manufacturer: Shun Yingtong