Blackedge carpenters pencils have an oblong section which can be sharpened to a chisel shaped edge. This eliminates the tendency of a pointed pencil to follow the grain.
Available in three grades -
Green (hard). For Hardwoods, Brickwork and Plastered walls
Red (medium). For General Carpentry
Blue (soft). For Softwoods and newly felled timber
Card of 12. Hard (Green) Ideal for marking Hardwoods, Brickwork and Plastered walls.