High-Visibility Pitot Covers These classic, high-visibility, durable polyurethane covers fit round and blade-type pitot tubes on commercial and general aviation aircraft. Specifically designed for 5/8-inch round and blade-type pitot tubes, our line of polyurethane pitot covers feature a bright red, flexible construction that snaps over the pitot tube for long-term protection. Integrated reinforced vinyl RBF flag provides maximum visibility day or night.