Wall Lenk DG300 Drill Guide Kit Center Punch Easy way to center drill flat surfaces, corners, and spheres Works well on wooden dowels and balls Includes: drill guide, center punch/locator, 4 drill bushings: 3/16 inch, 1/4 inch, 5/16 inch, 3/8 inch diameter Drill guide Kit Center punch Enjoy impressive drilling accuracy and performance with theWall Lenk DG300 drill guide Bushings work with your drill models to drill different sorts of materials Makes center drilling on flat and curved surfaces quick and simple Center locator/punch helps you mark your pieces to enhance accuracy Silver finish is tough to protect items from wear and tear;and gives items an attractive;contemporary look