SPECIAL ORDER ITEM. Review Returns Policy before purchase. This copper fitting reducer features an inboard bead and yellow HNBR O-ring. Pressing with a tool secures a clean, robust seal in seconds - no flame, solder, or flux needed. Designed for connecting copper tubes in residential and commercial water, gas, and compressed air systems, including underground installation. PressG fittings offer precision, durability, sustainability, and are supported by full tooling and accessories.