Pencils are of course drawing instruments, generally of wood casing over graphite of various hardness, but there are also mechanical pencils with more elaborate metal or plastic cases allowing refillable graphite leads. Most pencils are graphite pencils, but an artist also may draw with charcoal pencils, color pencils, or grease pencils.
Pencils offer artists great versatility and uses. Graphite pencils are available in a wide variety of shades and hardnesses. Likewise with charcoal, whereas color pencils offer nearly any color an artist might desire. Pencils can be used in virtually any position and nearly any environmenteven underwater.