New old stock NOS Limited Edition Shimano Airlines Groupset. Groupset made by Shimano in the late 1990s to try shifting by air instead of cables. Worked great for downhill mtb. 400 shift in a pumped up can. Groupset is original and complete. Never used or put in a bike. No. 165 out of 1000 https://www.shimano.com/en/100th/history/products/result.php?id=72 Not including: Shimano Airlines manual, but you can find it on https://www.disraeligears.co.uk/site/shimano_airlines_derailleur_ar01_-_booklet.html