TEKTON 4 mm and 1/4 Inch Bit Driver and Bit Set with Cases (134-Piece) | DRV99004

4 mm Bits - Set includes 96 unique bits spanning 20 types, with no duplicate bits or filler pieces 1/4 Inch Bits - Set includes 36 bits spanning 6 types, with no duplicate or filler pieces Flexible Bit Rails - The rails securely grip the bits so they can't fall out, while also making it easy to remove any bit one-handed Clear Markings - The tip size and Tekton "T" are clearly stamped onto every bit, and the rails have high-contrast size markings printed on the top of the rail Resistant to Corrosion - Each bit is finished with a zinc phosphate coating that provides lasting corrosion resistance without altering dimensions or flaking