The Carlisle Oar Shaft is proven around the world with a tough, maintenance-free, quality aluminum shaft that gives you maximum strength and performance. The 1-7/8" diameter thick-walled tempered aluminum tubing is sheathed in colorful, abrasion-resistant polyethylene tubing. 8' and longer oars have reinforced inner shafts for extra-duty strength. Rubber grips cushion the molded plastic handles. Removable blades permit easy storage and transport. Shaft is measured with blade attached. Blade sold separately.