If you’re in need of 18.00X5.5 or Airframe, from Agustawestland S.P.A., Aerospace Unlimited is your one stop shop. We carry Helicopter parts and other items as Inner Tube,Pneumatic Tire. If there is something specific that you are searching for, browse by Aircraft Model part number such as 18.00X5.5 in our catalogues to find what you need. KCTF9, engines, fasteners are just a few of the 6 billion items that we can inventory. And thanks to the various shipping locations that we have, we can ship almost anywhere. Contact us today to get an immediate quote!