Birchwood Swift With ClampMade of Birchwood, these yarn swifts are the ultimate tool for serious knitters. Their elegant style and ease of use make them worthy of being on display in your home, and provide a strong tool that will last for years to come. Each swift will accommodate a skein measuring up to 78". Swift with Clamp: 24" tall (including clamp) x 7" diameter (closed). Note that this is a handmade item, and sizes and shaping may vary slightly from the sample shown.