The jumbo eraser is more flexible and lasts longer than traditional pencil erasers. Twist the top ring to extend or retract the eraser. The non-abrasive erasers won't scuff, smear, or leave ghosts on your writing surface. The mechanical pencils have a quick, convenient side button to advance lead and a latex-free grip for ultimate writing comfort. The durable metal clip will withstand repeated use. HB lead is equivalent to a #2 pencil. This is a Recycology, eco-friendly product that is made with 59% recycled plastic. Includes: SIX 0.7 mm mechanical pencils, SIX erasers, and THREE tubes of 0.7 mm lead -- 12 pieces of lead per tube (36 pieces of extra total lead).