Loading... Please wait...Drill perfect holes in foamboard using four interchangeable quick-change drill tips. Choose 3/4", 1/2", 0.28" and 0.18" diameters. WD-8011 works with 3/16" foamboard. Choose from replacement tips WD-18 (0.18"), WD-28 (0.28"), WD-50 (0.50") or WD-75 (0.75").