C3 Replacement Propeller Blade 12-1/4 X 15 | Piranha Propellers 121/415C C3 Replacement Propeller Blade 12-1/4 X 15 | Piranha Propellers 121/415C - Generally used on mid-range horsepower motors (approximatey 70 Hp and less). The diameter of this blade does not often work well with outboard motors made by Johnson / Evinrude though. These blades are used with C-style propeller hubs.If you are not sure if this blade is appropriate for your use, please contact us for a recommendation. Here is the Piranha advantage: The Modular Design Compatible with most engine makes & models. Allows for individual blades to be replaced or re-pitched. The Hub is guaranteed for life. The Blades Precise engineering balance to two times the industry standard. Precise balancing reduces lower unit wear caused by vibration. The Piranha Propellers modular design allows for blades to be replaced due to damage or to be re-pitched for performance. The key to the patented Piranha Propellers boat propeller is the hub. The center hub is made from a high-strength aluminum core, over molded with a specially-formulated composite material. The Piranha Propellers blades are designed to absorb the shock of a propeller strike, which virtually eliminates lower unit damage. Piranha blades are designed to absorb shock during a propeller strike. This basically eliminates damage to the lower unit. The blades will take the brunt of an impact; failing in order to protect the prop shaft, while the center hub absorbs any residual energy, preventing lower unit damage. What you get is a hub so strong it's guaranteed for life! Don't leave the dock without spare blades for fast repairs and to stay safe on the water. Piranha Propellers 3 blade propeller replacement blade fits C Series Piranha Propellers. This is a single blade. To buy a set of 3 blades for your hub, see our optional set priced accordingly.Don't forget to get the floating prop wrench or mesh gear bag for storage for convenience.