Perfect for industrial use, this durable marker with an extra bold tip marks on dark surfaces with an opaque line & writes on virtually any surface. Specially formulated to mark on wet & oily surfaces. Quick-drying ink is waterproof, smearproof & fade-resistant. Easy-to-use, twist-up container makes marking easy. Marker Ink Type: Permanent; Marker Tip Type: Bullet; Marker Tip Size (text): Broad; Marker Color(s): Yellow.