Refill your mechanical pencils with quality, super hi-polymer graphite leads. 0.3mm is for intricate designs. 0.5 and 0.7mm are great for general writing. 0.9mm are super for drawing and sketching. Dozens.

HB PEN-300HB	0.3mm lead	$1.79	Qty:
2B PEN-C5052B	0.5mm lead	$0.99	Qty:
HB PEN-C505HB	0.5mm lead	$0.99	Qty:
2H PEN-C5052H	0.5mm lead	$0.99	Qty:
4H PEN-C5054H	0.5mm lead	$0.99	Qty:
2B PEN-502B	0.7mm lead	$0.99	Qty:
HB PEN-50HB	0.7mm lead	$0.99	Qty:
2H PEN-502H	0.7mm lead	$0.99	Qty:
2B PEN-502B9	0.9mm lead	$0.99	Qty:
HB PEN-50HB9	0.9mm lead	$0.99	Qty:
2H PEN-502H9	0.9mm lead	$0.99	Qty: