Type: Patented pilot pin & seal Standard configuration:Connector of G1/2,Product height adjustable range: 204 - 330mm,The height can be adjusted to fit that of toilet tank: the highest after being heightened is 380 and the lowest 204 Optional configuration: Plastic connector of 15/16” and brass connector of G3/8,Regulator For high water pressure areas,Plug adapter Refill range: 0.31% For toilets that need refill water