Hitachi 70 Piece Bit Set [728704] The Quick Change Connector chucks directly into drill for quick accessory changes making tool changes fast and easy. Compatible with all 1/4" hex shank accessories Last 2X longer than standard drill bits Titanium coating reduces friction and increases drilling speeds in metal Penetrates on contact preventing drill bit "walking" (7/64 and larger) Includes: (1) Compact Screw Guide, (1) 1/4" Knurled Connector (4) 1/4" Hex Nutsetters: 1/4", 5/16", 3/8", 7/16" (4) Hex Woodboring Bits: 3/8"; 1/2"; 3/4"; 1" (3) 1/4" Hex Masonry Bits: 1/8"; 1/4"; 3/8" (33) 1" Insert Bits: 6xP1; 7xP2; 6xP3; 4x4-6 slotted; 4 x 6-8 slotted; 3xR1, 3xR2 (13) 2" Power Bits: 2x4-6 slotted; 2x6-8 slotted; 1xR1; 2xR2; 1xP1; 3xP2; 2xP3 (14) 1/4" Hex Titanium Drill Bits: 2x1/16"; 5/64"; 3/32"; 7/64"; 1/8"; 9/64"; 5/32"; 11/64"; 3/16"; 13/64"; 7/32"; 15/64"; 1/4"