The Sharpie Mean Streak white bullet tip permanent marking stick is great for industrial use. The extra bold tip offers marks on dark surfaces with an opaque line. The user-friendly, nontoxic ink is safe to use. It is perfect for marking dark surfaces, glass, aluminum, rubber, cement, steel, wood, leather, vinyl, iron and plastic. The Waterproof ink avoids fading and adheres to virtually any surface. It is great for salvage yards and marking on parts. Permanent marking stick is great for industrial useExtra bold tip marks on dark surfaces with an opaque lineWhite colorFade-resistant and water resistant ink for long lasting useNontoxic formula for safe useWaterproof formula prevents fading and adheres to virtually any surfacePerfect product for salvage yards and marking on partsAP certified