Complete accessories: Comes with 40mm long expansion tube, 47mm long screws, pins and stainless steel bases etc. Spindle and base: Stainless steel material, anti-oxidation, sturdy and durable. Extension screws: Comes with general purpose expansion screws, suitable for mounting holes 14-20mm wide and any depth. Simple installation: Complete accessories, just put the plastic expansion tube first, then put the screws and other accessories, then cover the base. Universal size: Suitable for fixing the toilet lid of any brand.