Rapco Terminator chain is the firefighter first choice when it comes to carbide chain. Terminator is 3 times more efficient than Rapco's standard tough carbide. It is used for high impact situations. Professional burl cutters, fire departments and pulp mills have relied on Rapco carbide chain for years. Rapco Terminator carbide chain is made by combining two chain cutters and silver soldering a solid chip of carbide on the cutting face. The carbide chip is then reshaped to give maximum impact resistance.The result is a saw chain that can last exceptionally long in severe impact conditions. Rapco Terminator chain is specifically designed for use with fire department venting chainsaws. 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 when impacted by hard objects.