Replacement Blade Kits We offer Replacement Blade Sets for all the kits.  We also offer Blade Kits for the scratch builder in choices of two (2), three (3) and four (4) Bladed Kits for autogyro models using engine sizes .25 through .91. (Model weights 3-12 lb.) These blade kits Include laser-cut, airfoil-shaped balsa rotor blades, laser-cut ply root caps, laser-cut ply sheeting (35.5" length blades), chordwise balancing wire, blade mounting hardware and tip weight shot.  Our email tech support will assist choosing the proper blade sizes for your model. Blade Length Options: 23" & 26" with 2" blade chord and 23.5" & 35.5" with 2.25" chord.  For our kit customers, these replacement blade sets are identical to the kit blades.  When ordering, simply order by kit name.  For those scratch builders, please order an Autogyro Company of Arizona kit Construction/Flying Manual with your blade order (for assembly/balance/track instructions). Blade Lengths:  23", 23.5" and 26"... 2-Blade: $39...3-Blade: $49...4-Blade: $59. Blade Lengths:  35.5" (Balsa/Ply)..... 2-Blade: $59...3-Blade: $69...4-Blade: $79.                              __________________________________________________________________