Keson PM103BLUE ProChalk Permanent Chalk, Blue, 3-Pounds Generator Axial shear face grind cleanly

Axial shear face grind cleanly Shears through wood for a superior quality finish

High performance carbide for greater durability and cutting performance in metals with a thickness from 3/16" to 9/16"

with enhanced oil tolerance for superior performance

flats on the larger cutters keep the cutter from slipping in the jaws of the drill while a lock washer on the smaller cutters keeps the blades from slipping

Keson PM103BLUE ProChalk Permanent Chalk, Blue, 3-Pounds Generator Axial shear face grind cleanlyProfessional grade permanent weatherproof marking chalk Applications include exterior layout, concrete layout, roofing, metal fabrication For weatherproof and waterproof lines that Aren't going to go away any time soon used for more extreme conditions Made in the USA