Derwent Mechanical Art Pencil HB 0.5 Achieve a maintained grip whilst creating fine line drawings with the Derwent Mechanical Art Pencil. It has a slim 0.5mm metal barrel, which is comfortable to hold. The pencil features an eraser under the push button cap for those quick adjustements and corrections. It includes a refill pack of 15 HB leads and 3 erasers. Place up to 4 leads in the barrel at one time. . 0.5mm barrel . HB . Lightweight . Built in eraser . Includes 15 HB leads and 3 erasers   . Approx. Dimensions (mm) H 235 W 94