The general purpose crayon stick marker is made for a variety of industrial applications. It writes on most dry or wet surfaces (except on wet glass). Waterproof and highly fade-resistant on most non-porous surfaces and is easily applied on smooth and rough surfaces. Marking surfaces include: PVC, tin, iron, wood, concrete, aluminum and glass. Removable from most non-porous surfaces only through friction caused by hard rubbing. Working temperature range: 14°F to 122°F (-10°C to 50°C) 15mm diameter x 125mm length (5/8" diameter x 5" length) Will fit in most generic lumber crayon holders for frequent use.

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