Ink feed: sealed capillary reservoir with ink-level window

Featuring a specially optimized valve system and a 10mm chisel tip

The dual-sided surface gives a fine grain face for charcoal

without leaving ghosting or a chemical film behind

pentel ain stein refill leads 0 9 mm Lead Grade:HB Ink feed: sealed capillary reservoirThe heaviest diameter in the AIN Stein range a thick, bold graphite lead for heavy handed writing styles, technical shading, storyboard sketching, and field notation where a substantial visible line is required. The ceramic honeycomb core delivers complete break resistance at 0. 9 mm under standard writing conditions. The Hi Polymer resin produces deep, rich lines that adhere tightly to paper grain without the powdery smudging typical of standard