Hareline's economy standard bobbins are made with durable stainless steel construction and have many of the same features as more expensive fly tying bobbins but at a fraction of the price. The elegant brass feet and adjustable tension legs allow for smooth spool rotation, while the smooth tube ends ensure your thread won't fray while tying. Great for budget and expert fly tyers alike, Hareline economy standard bobbins ensure you get a great fly tying bobbin at an affordable price. 4" in length.