Size: 1". It requires diligence. It requires a steadfast commitment to continuous improvement. It requires the mentality that being the best is a journey, not a destination. Building the industry's best AC and DC fuel transfer pumps and chemical transfer pumps and accessories is a mission they take very seriously. When you use a Fill-Rite fuel or chemical transfer pump, you see our commitment to excellence. Built into every fuel transfer pump, chemical transfer pump and meter is over 50 years of experience and the pride and workmanship associated with the moniker "Made in USA". Fill-Rite uses only the most durable materials to insure long life and dependability. Fill-Rite branded products deliver superior performance time and time again, regardless of the application or installation. For fuel and chemical transfer, nothing beats Fill-Rite.