Prussian Tape is a woven nylon tape used in the manufacturing of corsets. It is stitched on to encase the corset bones, amongst other uses. Sold by the 50 yard roll; and, available in Black, Beige or White. If your project requires 500 yards of a specific color, we will be delighted to dye that color for you and carry the balance of the minimum yardage for future projects. Please contact customer service.