B.A.S Inertia Reel 4 Point Shoulder Harness/Lap Belt System is designed and STC'd as a retrofit assembly to replace current aircraft seatbelts. The inertia reel shoulder harness system can be installed in the 2 forward seating positions of the aircraft. The shoulder harness system consists of an inertia reel mounted to the aircraft cabin roof above and behind each seat, a "Y" shaped shoulder harness, a lap belt with mating buckle and associated bracketry and hardware to attach the system to the aircraft. Each kit comes complete with all mounting hardware, installation instructions, and STC for both Pilot and Co Pilot shoulder harness seatbelt systems. Suitable for Cessna 170, 170A, and 200 Series, Piper Models PA28, 32, & 34, Beech Bonanza 33, 35 & 36, Baron & Travel Air models 95, 55, 56 & 58 and other aircraft.