1、Rugged: This adjustable drill guide attachment features a keyed chuck, tapered depth control shaft and limit ring, spring reset, reversible chuck holder, built in V groove, centering and adjustable fence. 2、Larger Chip Discharge Volume: This woodworking drill locator has a larger chip discharge volume, faster and smoother chip discharge, more labor saving drilling, and improved work efficiency. 3、Clear And Accurate Scale: This hole punch template guide tool features a clear and accurate scale that adjusts to the thickness of the wood for accurate alignment., and can be used for handcrafting, furniture making, woodworking, etc. 4、Excellent Aluminum Alloy Material: This drilling jig attachment is made of excellent aluminum alloy material, which is sturdy and abrasion resistant and can be used for a long time to make drilling vertical boards easier. The design of the woodworking drill hole locator makes drilling wood holes easier, straighter, and more accurate. 5、Easy To Install: This portable drilling guide is easy to install, without the need for complicated operations and tools, you just need to put it together, which is very easy to use.