The Fermentap Weldless Sight Gauge features a glass sight gauge encased in a chrome-plated sheath. All metal parts in contact with the beer are 100% stainless steel, and the gasket is a high temp, food-grade material. You will need to drill a 1" hole in your kettle. This sight gauge features our new Fermentap Bulkhead, which is a beefy bulkhead with a full port hole. This means that you can actually upgrade this setup with a thermometer which will thread into the body, allowing you to check temperature and fluid level off the same upgrade! Features: 20" Sight Gauge is perfect for up to 30 gallon kettles(dependent upon dimensions!). Monitor liquid level visually without opening up your kettle! Extremely useful for HLTs on the top tier of a sculpture. Stainless construction means the product will last for years. Sight Gauge disassembles easily for cleaning. 1/2" FPT on sight gauge base means you can upgrade with a thermometer! Replaces our WL126.