5 piece set of spiral brushes for cleaning all types of carburetors including auto, truck, motorcycle, industrial, lawnmower, snowblower, trimmer, blowers, chainsaws, generators. Also handy for cleaning airbrushes and tattoo guns. Smallest size is approx. 1/16" and largest is approx. 3/16". Winner to pay 2.60 shipping in the Continental U.S.A. Thanks for looking & check my other listings for larger sizes of all purpose cleaning brushes.