36 x PENTEL SUPER HI-POLYMER MECHANICAL PENCIL LEADS FULL RANGE AVAILABLE: F - B - 2B - HB - H - 2H - 3H - 4H The no.1 selling refill lead in the USA. Pentel's Super Hi-Polymer lead is specially formulated for improved  strength. It's stronger, more uniform, smoother and lasts longer than any other brand. For all automatic  pencils requiring standard lead refills. 3 x Tubes of 12 Leads 36 x Leads in Total 0.7mm Excellent Value BRAND NEW FREE POSTAGE