0-HMXE2203 Heli-Max Blade Guard 1SI (4) <p><font color="#00ff66" size="2" face="Arial, Helvetica, sans-serif">These are the optional Blade Guards for the 1Si Quadcopter from Heli-Max. Plastic construction. Protects rotor blades from damage in the event of a crash, and also allows heli to continue to fly if it brushes up against a wall or other solid object. Two Gray and two White Blade Guards and Four Mounting Screws included.</font></p>