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 Assorted pencils - Blue, Red & Green