Put a length of the tow( a hank) in your hand. Now put the corkscrew patch puller jag onto the hank at right angles to the length of the hank. Close your fingers to wrap the hopefully short end of the hank around the corkscrew, and begin twisting the jag against your hand to wrap the hank around the jag until its wrapped tight. Now, hopefully, you didn't use so much that you can't get it in the bore of your gun. You will figure it out.
If the tow is too wide or thick, simply squeeze it while rotating the jag, so that more fo the tow goes inside the wire corkscrews.
Tow is used in place of a Swab to wipe smoothbores, mostly. they can be used in rifled barrels, but you are likely to break off bits of tow and leave that debris in the barrel, unless you then flush the barrel out with water.
In use, water is poured into a plugged barrel, and the tow is run down to scrub the residue off the sides of the bore. The coarse fibers act as an abrasive, where a cotton swab can't serve that purpose. That is its main advantage.
However, today, we have bronze bore brushes, that can be used to scrub the bores efficiently and thoroughly. If you put a cotton flannel cleaning patch on/ in front of the bore brush when you start the brush and patch into the bore at the muzzle, the bristles of the brush will Grab the fabric of the cleaning patch, holding it against the walls of the bore to clean them, and to soak up the BP residue that is scraped and knocked loose by the the bore brush bristles.( say that 5 times fast, I dare you! :grin: :hmm: ) There are also brushes available made with nylon bristles, that are considered gentler on the bore- altho, for the life of me, I can't figure out how a bronze bristle can possibly scratch a steel barrel????? :idunno: :hmm: :thumbsup: