The wide horns of the Sawyer Cobra Oarlocks have greater load area for much less stress on the oar-lock horns and increased durability. The elongated, oval opening allows for an additional 10-15 degrees of vertical range while keeping your oars snug in the locks. Made of a specially formulated bronze alloy for superior strength and proven by professionals throughout the world. Oars with rope wraps or oar sleeves can sometimes fit snugly in oarlocks. Compare the measurements under the Specs to those of your oar shaft to ensure a good fit with these oarlocks.