"V" groove makes this brush ideal for cleaning tight hard-to-reach areas. Stainless Steel is recommended when brushing corrosion-resistant or non-ferrous metals such as stainless or aluminum or when the brush is being used in a wet environment. Ideal for cleaning most aluminum. 13-3/4" long wood handle with pre-drilled hang hole. Features .014" Stainless Steel wire in 3 x 19 rows.