Vintage Aerolex Aircraft Seat Belt Assembly! RARE Twist Release Buckle! Part Numbers 24200.1 R1R3, SHT1 MK2, Shown. Green/ Brown Webbing (2 Width), Spring mount clip works perfectly, Not Numbered. Total belt extended length approximately 27 to eyelet, See Pictures. Includes everything pictured above (buckle, belt & spring clip), See pictures for general details and measurements.