No bro , it's for electrical conectors, they're round tubes 4 inches long or so packed in a variety of three or four sizes, smallest is 1/8 inch I think, perfect to start, slide it on the pin ,heat,cut to length, it's going nowhere, then the next size and so forth, until it's a done deal,,, makes it just big enough to do the job,, Home Depot , by all the connectors and stuff,, 3 bucks,,,,