Introducing the Promark Thunder Rods for sale in birch. The ProMark Thunder Rods provide the ultimate strength and durability, ideal for the heaviest of hitters. This alternate sound source is the loudest and most durable of the Rods line, constructed with seven large birch dowels. We have the Thunder Rods available for purchase online, in person, or via telephone. Our drum shop has a huge selection of Sticks and Mallets from Promark and alternatives. Please give me a call if you have any questions about the Thunder Rods or choosing rods and brushes to add to your stick bag.