Ergonomically designed wide, flat handle makes for easy rotating of brush. Excellent for all wide mouthed lab bottles, culture, volumetric graduated, filtering and many other kinds of long flasks, jugs and cylinders. This brush is tough, yet non-abrasive, and dishwasher safe. It works equally well on both plastic and glass bottles. It has a foam tip, soft bristled stem. Use with hot water and no detergents needed. Product dimensions are 20"L x 2"W x 0.5"H.