For big marking jobs, use the Sharpie Magnum Permanent Marker. The 5/8" wool nib produces broad, bold strokes and marks on wet and oily surfaces. Xylene-free, nontoxic ink is highly water-resistant and dries quickly. Durable aluminum barrel and tip stand up to heavy use.SAN44101PP. 44101PP. Sharpie Sharpie Magnum Permanent Marker.