To form a split-yarn strand, open the yarn, separate the fibers, and then rotate the spool holder. The Bobtec 1’s balance mechanism supports this rotation around the thread’s axis. The slider adjusts tension during fastening, and the tool’s design makes it easy to change spools. The body is made of stainless steel; the tube features a hardened steel ring to prevent fraying. This is a good choice if you regularly use split wire for your collars.