Diameter: 25 mm (0.98") Height: 152 mm (6") INCREASED DURABILITY Nitram Charcoal is produced using a unique process that maintains the wood’s cell structure to increase durability and prevent breakage. Unlike willow and vine, Nitram is not brittle and is less prone to breakage. LESS DUST Nitram Charcoal creates less dust, making it a better choice for those sensitive to the dust of willow and vine charcoal. Less dust means less mess. Nitram’s variety of grades provides rich blacks and superior tonal values. SHARPENS TO A FINE POINT Tired of narrow paint sticks with flimsy sandpaper? No need for frustratingly small, thumb-sized pencil scrapers! Nitram’s Sharpening Bloc is for real artists with an appetite for sharp drawing tools! And it comes with a spare set of sanding surfaces! EASY TO ERASE By using an eraser quite vigorously in passages you can create various tones – the pressure you use will determine the tone in your chosen areas of the drawing. You can also blend the charcoal with your fingers or a cloth to expand your repertoire of mark making.