Global Art Materials Coates Artist Willow Charcoal Scene Painters Sticks, 12 Sticks" /> assorted set of 7mm - 12mm in diameter 12 Full sticks per box World's finest natural willow artist Charcoal Rich Black hue and Velvety smooth stroke Made in England Thin 2-3mm Medium 4-6mm Thick 7-9mm Extra-Thick 12-14mm Tree Stick 16-24mm