Microjig is on a mission to end table saw injures by 2020. We ve made a pledge to empower the next generation of skilled craftsmen by donating Grr-Rippers to every high school woodshop in the U.S.A. Your purchase will support safer smarter work practice in the classroom and beyond. Together we can make table saw injuries a thing of the past. The Grr-Ripper provides three directions of force giving you superior precision control and safety. Downward Virtually eliminates kickback Inward Keeps stock firmly against the fence Forward Control and feeds both sides of the stock for cleaner cuts The Grr-Ripper Advanced is your solution for safer and smarter cuts on your table saw router table jointer and band saw. Features 54% more powerful gripping service for wider cuts and larger stock. Includes 250% more stabilizing area for cutting narrow and tall work material. Unlimited uses and unmatched safety. .