Why opt for multiple drill bit sets when you can get a combination set that includes the basic drilling bits you'll need to work on a range of surfaces? Wulf 9pcs Combination Drill Bit Set is a complete set that sorts all your basic drilling requirements! It comes with 3 HSS drill bits, 3 masonry bits and also includes 3 wood drill bits that allow you to get drilling with just a single set. The sizes are 5, 6 and 8 mm across all three variants making it suited for most standard applications. The bits are forged with hardened steel for durability.