Dy-Mark P20 Paint Marker Reversible Bullet/Chisel Tip

Key Features
Reversible Tip: Features a dual-ended nib that can be switched between a 2mm bullet tip (for detailed work) and a 4mm chisel tip (for broader strokes).
Fast-Dry Formula: The liquid paint is xylene-free and fast-drying, typically becoming touch-dry in about 5 minutes at 25°C.
High Durability: The ink is lightfast, UV stable, and weather-resistant, making it suitable for both indoor and outdoor environments.
Heavy-Duty Construction: Nibs are replaceable and designed to resist abrasion on rough surfaces. A valve-action mechanism prevents paint from drying out if the cap is briefly left off. 

Typical Uses
The P20 is widely used in trade and industrial settings for labeling, color coding, and identification: 
Surfaces: Metal (including steel), wood, plastic, glass, concrete, and timber.
Applications: Construction site measurements, quality control in manufacturing, equipment labeling, and steel fabrication.
Specialty: It can be used on steel without "bleed-through" after galvanizing and is removable in pickling baths.