Pentel's #1 selling mechanical drafting pencil Superior construction with 4mm tip design Great for use with rulers and templates Uses Pentel Super Hi-Polymer HB lead which is equivalent to a #2 pencil Metallic Green barrel pencil with eraser takes 0.5mm lead size Pentel's #1 selling mechanical pencil is the Sharp line which is made to meet the demands of both students and professionals. The 4mm fixed sleeve design is ideal for use with rulers and templates. This 0.5mm, Metallic Green barrel pencil comes loaded with Pentel Super Hi-Polymer HB lead and has a metal cap to cover the white eraser. Refill leads and eraser are available.