Especially useful for weavers who warp alone. It allows for the option of putting on more or less drag depending on the type of warp and the requirements. Note: The Tensioning Device is best suited for weavers who prefer to warp from front to back. When warping from back to front, use two of the provided dowels in place of lease sticks and easily secure to the back beam using the wooden tensioning devices. With this warping method, only two out of the four dowels provided are used. If you want perfect warp tension every time, this is the tool for you. "The greatest invention since the mute button." The tensioning device consists of: 4 wooden dowels, 2 wooden holders, 2 clamps, and instructions on how to use it. These are available to custom fit any of our standard looms.