A clean, detailed, and minimalist black-and-white technical sketch of a silicone applicator brush viewed from the front. The brush features a flat, wide, rounded silicone top, a sleek metallic ferrule connecting the top to the cylindrical handle, and a smooth but thick ergonomic handle. The sketch should resemble a professional product blueprint with precise lines and clear detailing. No text, labels, or additional elements, and ensure a transparent background, Clean minimalist black and white technical sketch of silicone applicator brush. Flat wide rounded silicone top. Metallic ferrule connecting top and cylindrical handle. Smooth thick ergonomic handle. No text or labels. Transparent background