BoatLIFE Silicone Rubber Sealant Cartridge - Clear [1150] Communication | VHF - Fixed Mount while four blades and three

while four blades and three blades both run well on tri-toons (recent testing has shown that pontoons and tri-toons run better with larger blade diameters than runabout or bass boat hulls)

Well Nuts work by expanding inside a pre-drilled hole

Function: 8 to 70V

Mount:  Horizontal

BoatLIFE Silicone Rubber Sealant Cartridge - Clear [1150] Communication | VHF - Fixed Mount while four blades and threeSilicone Rubber Sealant Cartridge Clear An all purpose, non corrosive, non yellowing, mildew resistant, low odor, 100% marine high quality silicone sealant. Tack free in 30 minutes or less. *Fully cured in 24 hours. For use above or below the waterline. Will not shrink, crack, or dry out. Superior flexibility and adhesion to fiberglass, plastic, metal, and wood. Retains flexibility and tensile strength even after years of exposure. Acid free cure will