Dr Slick's Ceramic Bobbin combines the long-lasting durability of a sturdy stainless steel tube, together with smooth ground and finely polished pink ceramic inserts at the barrel's rear and tip, ensuring fly tying threads won't fray or abrade under heavy tension. A true workhorse instrument and an all-around fly tier's favorite, if you could only have one bobbin on your fly tying bench, Dr Slick's Ceramic Bobbin is it.