Product DetailsBlack and Decker A7066 Titanium Drilling & Screwdriving drill bit set contains total 50pcs, This toolbox includes a selection of drill bits for use in wood, metal, and masonry, Drilling contains socket bits, screwdriver bits, and a magnetic bit holder, The titanium coating present on the bits of this drill bit set makes it easy for you to drill into heavy metals, its also protects these tools from corrosion, thereby ensuring a long lasting life.