Inlet and outlet are 1inch Female Thread With ball bearing swivels mechanism, the swivels turn the hose smoothly and none leakage, preventing tangling and twisting Designed as a rotating replacement part that can be easily installed and replaced in existing hose reel systems Make of Stainless Steel, which is waterproof and corrosions-resistant, ensuring durability and long terms performances swivels design provide rotation, significantly reducing the risk of kinks and flows restrictions, Manufacturer: JDNH