Hareline’s ceramic tubed bobbins are a great standard fly tying bobbin with the added benefit of a ceramic tube. Constructed with adjustable stainless steel legs and round feet, this bobbin allows you to have full control over your spool tension in the palm of your hand. The ceramic thread tube is extremely smooth and won’t heat up like standard metal tubed bobbins, resulting in less thread breakage as you tie your flies.Hareline’s ceramic tubed fly tying bobbins offer exceptional performance at a great value.4″ in length.