The Autostream self-feathering propeller has evolved through 8 models since 1976. Many experienced sailors have told us they consider the Autostream propeller to be the best propeller of its type available – a fact we are very proud of. They offer excellent propulsion, control and low-drag. Self-feathering propellers are the propeller of choice for most cruising sailors. It is also ideal for those with difficult docking conditions, hard to handle sailboats or those that just like the reassurance of extra control – all with little drag whilst sailing. The shaft drive range covers 15” to 20” for engines up to 80hp/60Kw , shaft sizes 1" -1-3/8" (1-1/2 with mods.)