DEWALT DW2178 52 Piece Drill Driver Contractor Set features the most common drilling and screwdriving accessories packaged into two Tough Cases and one innovative pocket-sized case for 10 bit tips and a Compact Drive Guide. (2) Industrial ABS Tough Case Containers for better storage and durability. Contains (16) 1 #2 Phillips bit tips in separate canisters for maximum productivity with most common fastener fitment . Compact Magnetic Drive Guide for optimal fastener retention during screwdriving applications.