The most popular oar blade sold by Cataract® Oars, the Magnum II™ features a high-grade urethane body molded around a stiff composite core. This combination lends moderate flex and unparalleled strength to the blade. With 7 inches of width, it displaces a lot of water. You’ll feel it, too, when you surge forward every time you give it a good heave on the river. Compatible with the SGG™, SGX™, and X Wound™ oar shafts.