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Markal® Pro-Ex® Yellow Lumber Crayon

Airgas Part #:MKL80381

Manufacturer Part #:080381

$1.42 /Each
Package Size Options
$17.04 Box 12 Each / Box
$204.48 Case 144 Each / Case
Enter multiples of 144 Each

Item Details

  • Markal® Pro-Ex® Yellow Lumber Crayon provides bold marks on different surfaces in the construction trades and delivers great results on wet or dry surfaces. Crayon features a stronger formula for quick marking and reduces breakage for longevity. It has a marking range of -20 to 150 deg F and the clay based formula facilitates marking. It is ideal for surfaces like wood, concrete and stone, metal, plastic, rubber and is used for construction, stone, masonry, lumber and timber industry.


  • Stronger formula for reduced breakage and longer marking life
  • Superior performance on wet, frozen, or treated wood
  • Clay-based formula for smooth, fast marking
  • Bolder, brighter marks for increased visibility
  • Extra long write-out gives better economy
  • Superior marking in all temperature and weather conditions eliminates the need for a soft crayon
  • Marking range: -20° F to 150° F (-29° C to 66° C)


  • Construction
  • Stone and masonry
  • Lumber and timber industry
  • Wood
  • Concrete and stone
  • Metal
  • Plastic
  • Rubber

Product Attributes

Product Type

» Lumber Crayon


» Yellow

Size Description

» 1/2" X 4 5/8"

Trade Name

» Pro-Ex®