24 x STAEDTLER MARS MICRO MECHANICAL PENCIL LEADS 1.3mm HB 4 x Tubes of 6 Leads "TOTAL 24 LEADS" Easy Erase, Break Resistant Leads HB 1.3mm Smooth Gliding Leads Jet Black Lines Suitable for use with All Mechanical Pencils FREE POSTAGE FREE Postage Quoted is for Delivery to UK buyers ONLY, please see my postal costs for delivery outside the UK.