Small handheld block brush with 0.006" crimped Plyer bristle, and a plastic block handle. This handy brush has a 5 x 9 row configuration, with a 5/8" trim, and a brush face of 2-1/4" x 1-1/4". Plastic block handle is 2-1/2" x 1-7/16". Known as a mushroom or vegetable brush. Very effective at scrubbing and cleaning small items. Plyer is a Polyester filament with notable bend recovery and chemical/solvent resistance, similar to Nylon (see our chart here https://www.gordonbrush.com/chemical-reactivity.php ) but has superior water resistance (stays stiff when wet) and heat oxidation resistance compared to Nylon.