The Black & Decker 31 piece drilling accessory set contains drill bits for masonry, metal and wood drilling as well as screw-driving bits so you have everything that you need to get started on any DIY home improvement task. The set comes in a handy, storage case that features a transparent cover for quick, easy identification of accessories, and is also designed with removable bit holders so that you can remove the bit bars from the case for ease and convenience. The bits are made from titanium metal to ensure long-lasting drill bits that achieve professional results. Specifications 31 piece mixed set - for masonry, metal, wood drilling and screwdriving Easy to use storage case - Able to access bits easily Dimensions: D 20.4 x W 16.2 x H 5.6 cm Colour: Orange/Black What's Included 5 x Bradpoint 3-8mm 4 x Masonry 5-7mm 8 x HSS-TiN 1.5-3.5mm in 0.5mm increments, 4,5, & 6mm 10 x 25mmScrewdriver Bits 1 x Ph1 2 x Ph2 1 x Pz 1 2 x Pz2 1 x Star 15, 25 2 x Star 20 2 x 50mm Screwdriver Bits