Get a Lyra Water Soluble Graphite Crayon for value studies

Get a kneaded Eraser

Get a regular pencil

or 

a mechanical pencil in .5 or .7 size with 2B lead 

or 

a 2mm lead holder and 2B lead.

 

$1.43 $1.85
$1.20 $2.00
$2.13 $3.55
$10.49 $13.85
$15.57 $19.25