Marking Tools

Make permanent, high-contrast marks that stick where regular markers fail. Keson Valve Paint Pens lay down opaque, industrial-grade paint on metal, concrete, masonry, wood, plastic, rubber, and glass—even when the surface is rough, dusty, lightly oily, or cold. A valve-controlled tip delivers smooth, consistent flow for crisp lettering, bold layout lines, and durable identification that stands up to weather, UV, and jobsite abuse. Key Features Valve-controlled flow: Press-to-prime valve...

Make bold, legible layout marks that survive the jobsite. Keson lumber crayons deliver dense, high-contrast lines on rough materials—framing lumber, OSB/plywood, concrete forms, masonry, and steel. The durable wax/ pigment blend resists crumbling, won’t wash out at the first hint of moisture, and glides smoothly for fast, consistent marking. Sized to fit standard crayon holders and pockets, they’re the everyday staple for framers, carpenters, masons, and fabricators. Key Features...

EARTHMARK READY All-Purpose crayons are perfect for almost all industrial applications. Made with a softer wax and offered in 11 colors, Earthmark Ready crayons will write on just about any surface, leaving a bright, vibrant mark. Used widely in the packaging industry, EARTHMARK READY crayons are an economic alternative to permanent markers because they last longer and are more affordable. EARTHMARK READY crayons are so versatile that many roofers purchase these crayons for their variety of...

Grab-and-go snapping made easy. The Keson K1 bundles a durable 100-ft chalk box with a 4 oz bottle of high-contrast red chalk, so you can start marking straight out of the package. The sturdy housing, smooth crank, and bold, high-hold line deliver crisp, visible snaps on wood, concrete, and sheathing—perfect for framing, roofing, and general layout. Fill, snap, rewind, repeat. Key Features Ready out of the box: Includes a 4 oz bottle of red chalk for immediate use. 100 ft capacity: Long reach...