SOLID MARKER PEN

• Twist-action, 13mm
• Permanent, nontoxic ink is fade-resistant and waterproof
• Marks on almost any surface in any weather condition
• Performs in a broad range of temperatures whether hot or cold

You can use this excellent solid marker pens to use  on your BCD , drysuit  or on cylinder(Steel) these marker pens are 100% waterproof and do not forget these pens are permanent.