Hemingways Synthetic Tapered Peacock Quills are made from a very thin self-adhesive flexible vinyl based material. Available in 10 colors each strip is tapered from a incredibly fine 0.2mm. up to 2.2mm. and 100mm. in length which will basically tie the body of any pattern. From the smallest patterns in the #20s and even smaller, to your largest patterns. They utilize an amazingly detailed gradient print which gives each quill one dark edge and one light edge you cant even get that from a natural quill. These are a great match for almost any pattern from midges, buzzers, and nymphs to your favorite dry fly pattern these quills wont crack, break, or split leaving you with a failing fly at the worst possible time.