The RIDGID 33670 Chain Assembly is designed for use with Soil Pipe Cutter Models 206, 226, and 286. The addition of one 33670 Chain Assembly will increase your chain length enough to allow 8" soil pipe to be cut. If you are cutting clay pipe ONLY, you can extend your chain to allow up to 15" clay pipe to be cut. Please note that the 33665 Chain Extension Assembly, required for adding a chain extension, is sold separately.