Manufactured in the U.S.A. by FCC licensed ham radio operators, this coaxial adapter set ensures high performance and reliability. Each adapter is meticulously tested with the Bird SiteHawk SK-4000 to guarantee a VSWR less than 1:1.35, assuring minimal signal loss. Designed for applications requiring low loss and enhanced shielding, this product is perfect for radio transmission systems. It comes with a 60-day return policy and a 1-year exchange for any defects, making it a dependable choice for professional RF needs.