One of the most valuable tools on the job site is the pencil. Many of us use the carpenter pencil which can be easily picked up at any do-it-yourself centers. You might say it's only a pencil. But remember time is money. When it comes time to sharpening your carpenter pencil you better have a knife or a sharpener handy. Using a sharpener on a carpenter pencil leaves a lot of wasted lead. With a good mechanical pencil you never have to worry again. The Art Alternatives pencil comes with 3 leads, an eraser and a built in sharpener. The pencil costs as little as $9.00 for the set.