Latest carbide chain design from Rapco. Professional burl cutters, fire departments and pulp mills have relied on Rapco carbide chain for years. Rapco Dragon carbide chain is made by welding a slim piece of carbide on the top of a chain cutter. The carbide chip is then reshaped to match the original design. The result is a saw chain that can last exceptionally long in abrasive conditions. Rapco Dragon carbide chain is designed for demolition work, and the long cutter design allows for many more sharpenings. Cutting speed is significantly reduced when using this chain. Use a diamond grinding stone or wheel to sharpen. Please note that there is no warranty on this chain, and cutters will break and chip if impacted by hard objects.