Brushtech Brush Quartet
These brushes can be used on hundreds of items too numerous to list here.

A partial list includes tubes, every nook and cranny in all models of automatic or semi-automatic espresso machines, tight spots in sewing machines, electric razors, electric hair trimmers, purifier & air conditioner vents, turkey basters, hummingbird feeder nectar outlets, hair dryers and auto dashboard air vents.