The 70MM Replacement Caps by TriceEssentials are designed for use with 5 and 6 gallon plastic Hedpacks, Carboys, and Jerricans. These manual caps are made of durable plastic and come in a natural color. They are easy to install by hand and are perfect for quick and convenient replacement. Manufactured in the United States, these caps are a reliable and practical accessory for any home brewing or distilling setup.