Comes in a 50 ft roll 50ft rolls, 6 inches wide copper tube. Rats, mice or insects getting in through small holes ? Stuffit is the answer to all your rat exclusion problems! Steel wool rusts when it gets wet and usually causes rust stains where it drips. That's where Stuffit comes in. Stuffit is an important part of rodent exclusion because it's made of the finest ingredients such as brass, copper and other inert metals. It is rustproof, stainproof and works great to seal weepholes and around plumbing, A/C, vents, and other places where rodents and insects enter. An industry standard in rat exclusion! Simply use a pair of scissors and cut off the amount you need. Then Stuffit !