Pro-Ex Lumber Crayons, 1/2 in X 4 5/8 in, Black

Features: Bolder, brighter marks for increased visibility | Clay-based, extruded formula gives the writing feel high volume users prefer | Extra long write-out gives better economy | Superior performance on wet wood | A stronger, heavier formula for reduced breakage and chipping | Superior marking in all temperature and weather conditions eliminates the need for a soft crayon