https://tool-shop.cz/en/air-fittings/2161-Euro-Air-Line-Hose-End-Coupler-2pk-8mm-Hose-End-5024763119637.html
Euro Air Line Hose End Coupler 2pk - 8mm Hose End - Tool shop
Euro bayonet to 8mm hose end. Overall length 40mm.
air line hoseeuroendcouplertool
https://www.dun-bri.com/catalogue/Workshop-Products-Consumables/Hose-Tubing-Fittings/Air-Line-Hose-20-bar-Rubber
DBG Air Line Hose (20 bar) | Rubber - Dun-Bri Group
air line hosebarrubberdunbri
https://www.electricrctoys.co.uk/product/silverline-air-line-hose-end-quick-coupler-2pk/
Silverline Air Line Hose End Quick Coupler 2pk - Electric RC Toys
air line hosequick couplerelectric rcsilverlineend