The product is a Collins NAV control collar with the manufacturer part number 622-6521-016, designed for compatibility with Rockwell aircraft. This aviation part is manufactured in the United States and has been inspected and tested, with an 8130 form provided. Perfect for aircraft maintenance and repair, this NAV control collar is a crucial component for ensuring safe and smooth operation of the aircraft. - purchase directly from us for a better price!! - we are open 24/7 and more than happy to assist. - we ship worldwide if purchased direct!