When the words are flowing, your fingers are firmly entrenched in the pencil’s rubber grip, and blood flow has become a thing of the past, the last thing you want to do is shift your hand to a new position. Shaker mechanical pencils are superior in this regard, allowing you to advance lead without adjusting your grip. Simply give the pencil a shake or two, and you’re good to go! Designed for continuous, free-flowing writing, these pencils are ideal for any serious writing endeavor.