For effective, safe cleaning of wide mouth glassware such as jars, beakers, cylinder, etc. Stiff, black bristles, with fan-shaped tufted end or circle tufted end, on heavy galvanized iron wire. Stiff bristles provide effective scrubbing. Designed to thoroughly clean the bottom and corners of beakers, cylinder, jar without scratching. Scratched glass is more prone to break during experiments, especially when the piece is heated.

      • Brush is a total 20 inches long.

      • Brush with tufted tip is 6 inches long by 2-3/8 inch wide in black nylon.

      • Twisted wire handle is 1/4 inches dia. with hanging loop.

      • Easily fits into a 1-1/2" opening or larger.