Perfect for industrial use, this durable marker with an extra bold tip marks on dark surfaces with an opaque line and writes on virtually any surface. Specially formulated to mark on wet and oily surfaces. Quick-drying ink is waterproof, smearproof and 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.