ø40mm Boom Folding Joint made by Aluminium Alloy 6061. It is for heavy load drone flight platform. Suit to ø40mm Carbon Fiber Pipe (tube) or Alloy boom. Nut style Joint has the best strengh for heavy payloads purpose. With the intergrated rubber ring, The Lock nut can avoid loosen during the flights. with the big straigth inside hole ,even XT90 plugs can go through it. JMRRC Agriculture Drone use this Folding Joint for ø40mm carbon fiber booms. Our other quality products Agricultural Drones Agriculture Drone Jobs Agriculture Drone Sprayer