A #2 pencil is HB. It refers to the grade -- hardness or softness -- of the lead: #1 = B, #2 = HB, #3 = H, and #4 = 2H, where you can think of H as Hard and B as... umm... not hard... lol, don't know what that one stands for. Many drafting pencils are made for use by drawers/sketchers who need...