The Meanest Drill READ THE ARTICLE READ THE ARTICLE | Published Mar 17, 2009 11:45 PM Uncategorized A switch deactivates the drill's rotation, so you can attach a chisel bit and use the DH50MRY like a jackhammer. John B. Carnett (See how it works) SHARE READ THE ARTICLE READ THE ARTICLE MORE TO READ RELATED How much exercise do I need to stay healthy? Reaping the health benefits of staying active might be simpler than you think. READ NOW RELATED Did food taste better 50 years ago? We can't go back in time, but some things have definitely changed. RELATED This protein may hold one of the secrets to predicting muscle growth There's surprisingly little research on how our bodies actually build muscle.