Work Tools International 25001 4-Inch Gold Stripe Premium Paint Roller Cover 10-Pack Whizz polyamide yarn offers unparalleled loading and unloading characteristics, with virtually no splatter The Whizz stripe yarn is "substrate responsive" providing the best possible finish on a variety of surfaces The yarn bases are actually baked into place (melted), minimizing shedding Whizz's Premium Gold Stripe is densely woven into a sturdy backing