A1DC-0510-3  Hexagonal F head plus waterpoof ring 7.5 hole
A1DC-0510-4  Hexagonal F head plus waterpoof ring 7.8 hole
A1DC-0510-5  Hexagonal F head plus waterpoof ring 8.4 hole
A1DC-0510-6  Hexagonal F head plus waterpoof ring 8.7 hole