24 x STAEDTLER MARS MICRO MECHANICAL PENCIL LEADS FULL RANGE OF GRADES AVAILABLE 2 x Tube of 12 Leads Easy Erase, Break Resistant Leads GRADES: 2B  B  HB  H  2H Please Select your Grade from the Dropdown Box above Smooth Gliding Leads Jet Black Lines Suitable for use with All Mechanical Pencils FREE UK POSTAGE