The Silver-Streak Metal Marker refill pack from Markal offers a reliable solution for marking on various surfaces, including oily, wet, or rusty metals. Designed with durability in mind, these stainless steel markers create highly visible marks that illuminate during cutting or welding processes, making them essential for tasks in shipbuilding, construction, and metal fabrication. The durable mechanical holder not only prevents stick breakage but also includes a built-in sharpener and pocket clip for easy storage, ensuring that you are always prepared for your next project. Please note that these refills are not compatible with the Pro Holder or Trades-Marker Dry models, but they stand out as a superior alternative to soapstone, providing lasting marks that won't rub off or damage surfaces. Made in the U.S.A., this pack of six sticks is a must-have for professionals seeking quality and reliability in their marking tools.