Use a sweeping motion with this tool over a stencil, and your design is quickly and accurately transferred! It comes with a supply of white iron-off Ultimate Pounce Powder, enough to fill it 3-4 times. It has a greatly improved staying power so no "bouncing" will occur when sewing over the transferred stencil designs. The powder goes a long way, as the manufacturer reports: One bag was opened right before a major quilt show last spring, was used non-stop demonstrating how to transfer the Full Line Stencils 9 hours a day for 4 days and still there was a quarter of the bag left at the end. That's a lot of quilt marking!