This 12-piece set of lumograph drawing/writing pencil includes high-quality graphite pencils in precisely differentiated degrees. Whether writing, sketching or drawing, they glide smoothly over paper. Lead is super-bonded to west coast cedar over entire length of pencils to minimize breakage. Leads are easy to sharpen. Lines reproduce well and easily erase. Tin contains 12 medium degrees: 6B, 5B, 4B, 3B, 2B, B, HB, F, H, 2H, 3H and 4H.