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: 16" Sight Gauge is perfect for up to 15 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 WL121.