Amazon.com: CiaraQ Bottle Cleaning Brushes, 8 Inch Nylon Tube Brush Set, Cleaner for Narrow Neck Bottles Cups with Hook, Set of 10pcs, Black : Industrial & Scientific
Nylon Condenser Tube and Heat Exchange Brushes | Torrington Brush Works
White Nylon Test Tube Brushes, 1-3/8" /35 mm Diameter (#3014WB) – Benz Microscope Optics Center