Professional Tool This Adjustable Woodworking Tool Is A Good Drill Locator For Easy Wood Drilling. With 1/4" Hex Shank For Use With Cordless And Corded Drills And Impact DriversEasy To Use V-Groove At The Bottom Can Be Positioned And Drilled Just Like An Auger, Simple And Convenient .If You Need To Take It Apart, Just Loosen The Screws On The Top, The Back Can Be Used As Two Drills Smart Design This Woodworking Locator Has A Very Compact Design With A Keyed Chuck, A Tapered Depth Control Shaft And Stop Ring, Return Spring, Reversible Chuck Holder, Built-In V-Groove, Centering And Adjustable Rails.All Of These Designs Can Help You Get The Job Done Quickly.High Quality The Red Part Is Made Of High Quality Plastic, The Screws, Brackets, Springs And Other Parts Are Made Of High Quality Steel, Not Easy To Oxidize And Rust, Which Gives It A Long Service Life. Convenient To Store There Are 2 Center Screws At The Bottom Of The Wood Positioning Tool. Tighten The Screws To Fix The Base When Using The Instrument. Simply Place It On The Drill When Not In Use. You Can Use The Fence As A Work Aid When Drilling Holes In Large Boards Or Other Boards