Did some digging for you :
The versatile Nissen Feltip Paint Markers dispense a fast-drying, high-gloss enamel paint for permanent marking, lettering, coding and numbering of both interior and exterior surfaces. The markers are easy-to-use and convenient to carry in your pocket.
* Marks on almost anything: metal, plastic, printed circuit boards, glass, wood, paper, leather, textiles, etc.
* Writes on any surface: porous or non-porous; rough or smooth; wet, oily or dry.
* Marks are permanent; they won't chip, peel, fade, or rub-off. They withstand heat and weathering under adverse conditions.
* Unique precision valve accurately meters flow, so the right amount of paint passes through the tip.
* Available in 9 bright, high-gloss, lead-free colors.
White, Yellow, Black, Red, Blue, Green, Orange, Silver and Gold
* Standard markers are approximately 1/8" wide line. Also available in Fine-Line, approximately 0.75mm wide line
* Long-lasting replaceable fiber tips allow full use of the marker
Ebay listing for 2 with choice white /yellow
http://cgi.ebay.com/Nissen-Welding-...tem&pt=LH_DefaultDomain_0&hash=item27ae784782