aluminum, plastic, plexiglass, wood, veneers, vinyl siding, plasterboard & PVC 1/4" Hex Shank - Engineered for drills and impact drivers IMPACT RATED for HEAVY DUTY USEItem: 12PC Titanim Coated Drill Bit Set 628204642804(2 x 1/16", 2 X 3/32", 1/8", 5/32", 3/16", 7/32",1/4", 5/16", 3/8", 1/2")