Fixed pitch propeller is characterized by fixed pitch, simple installation, low cost, convenient management and small maintenance. If the boat is fix for one function like fix running rpm, so its propeller will come to be a fix pitch propeller which means
Professional Industry 1600W Water Filter Wet Dry Vacuums I, Features: 3 Filters (Dust Bag, Water Filter, HEPA Filter) 0 Pollution Vacuum solids and liquids of great power: 1600 W. Power regulator to control all sucked. Suitable for all surfaces all