FRANCE HELICES MANUFACTURES ALL TYPES OF BRACKETS. BECAUSE OF THE LARGE NUMBER OF ANGLES, FRANCE HELICES HAS DEVELOPED A WIDE RANGE OF PATTERNS WITH AN EXCLUSIVE MODIFICATION ANGLE SYSTEM IN ORDER TO ALLOW ANY ANGLE OF INCLINATION BEFORE CASTING. THE DESIGN HAS BEEN MADE TAKING IN CONSIDERATION THE FOLLOWING PARAMETERS : MINIMUM DRAG, MINIMUM WEIGHT, STANDARD N.A.C.A. PROFILE, AIR INDUCTING (OPTION), NON CAVITATING PROFILE, HUB SIZED ACCORDING TO PROPELLER HUBS TO AVOID HYDRODYNAMIC DISTURBANCES.