Obtain the proper kind of hydrogen peroxide. You can use hydrogen peroxide to clear acne using one of two methods: in a cream, which contains a concentration of up to 1% hydrogen peroxide; and in âpureâ liquid form, which should contain no more than a 3% concentration.
3. Pitch : Pitch is the theoretical distance a propeller will move through the water for each revolution. (i.e. a 21pitch propeller should move a boat forward 21 for each revolution, assuming there is no slippage).
Prop Splines. Count the teeth on your prop shaft to determine spline count. Prop splines are the little teeth you see on your prop shaft and inside the prop hub. The number of splines on the shaft and inside the prop must match for the prop to fit your boat. A Pin Drive prop application has no splines. The prop is secured to a smooth prop shaft with a pin through the shaft.