1、There is a box which you can store and convenient to carry, the screwdriver bit is easy to install and remove 2、Including 20pcs kits, with a variety of bit specifications, can solve your various needs 3、Made of high-speed steel material, sturdy and durable, durable and long service life 4、The sets have professional design and reasonable structure, easy to replace and install 5、The fixed main part has delicate design, convenient to use and effort‑saving 1 x Fixed Main Part2 x Drill Bit1 x Wrench16 x Screwdriver Bits Item Type: Screwdriver SetMaterial: High speed steelProduct Configuration: 1 x Double-Ended Drill Bit8 x Cross Bits (2pcs each for PH0, PH1, PH2, PH3)8 x Slot Bits (2 x Approx. 3.2mm / 1/8in2 x Approx. 4mm / 5/32in2 x Approx. 4.8mm / 3/16in2 x Approx. 6.3mm / 1/4in)2 x Countersunk Drill Bits(1 x Approx. 2.4mm / 3/32in1 x Approx. 3.2mm / 1/8in)1 x Hex Wrench 1 x Yellow Special Blow Molding Box