Feature: 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. Specification: Item Type: Woodworking Drill Locator Material: Aluminum Alloy Application: Adjustable pin hole drilling guide for different thicknesses and easy to make joints.. Package List: 1 x Base 1 x Positioning Plate1 x Bearing Fixing Plate 1 x Drill Clamp 1 x Stroke Fixing Ring 2 x Columns 2 x Positioning Columns 1 x Wrench 2 x Positioning Pins 2 x Screws 5 x Knobs 1 x Rotating Shaft 1 x Manual