Feature  Dimension  Notes 
  Type Feathering:    3 Blades - Left or Right Handed Rotation  
  Diameter Nominal: 

  14.00" - 14.50" - 15.00" - 15.50" - 16.00" - 16.50" - 17.00" -  18.50" -  19.50"    

  Diameter at tips will be ~1/2" greater than nominal      
  Pitch Range:    18 to 24 degrees   Reverse - always ~ 24 degrees      
  Boss Castings:    316 Stainless Steel ex Rod Stock or Investment Cast  
  Blades:    DuPont HTN Zytel Black - 50% Glass  
  Nose Cone:    GF PP Glass filled Polypropylene - Sail Drives  
    GF PP Glass filled Polypropylene - Shaft Drives        
  Cap Screws:       Stainless Steel 304 / 316  
  Blade Pins:
  Titanium  
  Seals: 
  PETP (Boss) - Neoprene V Seals (Blades)  
  Shaft Diam's:   SAE 1:16 taper 7/8",  1",  11/8", 11/4"  
    ISO 1:10 taper 25mm, 30mm  
    Sail Drives  SAE 16/32 17 Tooth Spline on 28mm  
  Nut Threads:
  SAE - 5/8",  3/4"  for 1" & 1.125" or 7/8" UNC for 11/4"  
    ISO - M16 or M20 x 1.50 - Saildrives M16 or M20 x 2.00  Yanmar SD40 & 50 are M20 x 2
  Keyway:   SAE 1/4" or 5/16"  - Parallel  
    ISO 6 x 6mm or 8 x 7mm - Parallel  
  Power Range:
  <55 hp @ > 1340 shaft rpm  
    >~15 hp @ <1400 shaft rpm  
  Weight:
  <3.4 kg