With its corrosion resistance, rust resistance, abrasion resistance and long life, this hexagonal screwdriver is a great choice. It is also equipped with an adapter flex shaft compatible quick change and placement. It connects well with other equipment and is very practical. Designed with a hexagonal thread, the screwdriver is compatible and can be used with most electric drills and guide chucks. Moreover, it is very flexible, so it can help you with many difficult tasks. It is constructed of high speed steel material. There are 5 styles compatible reference. Hex screwdriver can tighten without slit general tools like screwdriver, drill, rechargeable drill, manual wrench, ratchet, etc. Item Name: Screwdriver Material: High Speed Steel Features: Anti-decompatiblemation, High Hardness, Professional Size Details: Silver Long Shaft: 13.6cm x 3cm x 5.5cm/5.35" x 1.18" x 2.17" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: Style A: 1 x Flexible Shaft 1 x Silver Short Shaft or Style B: 1 x Black Plastic Flexible Shaft 1 x Silver Short Shaft 1 x Silver Long Shaft or Style C: 1 x Black Plastic Flexible Shaft 1 x Silver Short Shaft 3 x Black Knurl Post or Style D: 1 x Black Plastic Flexible Shaft 1 x Silver Short Turn 10 x Yellow Shelf Bit or Style E: 2 x Black Plastic Flexible Shaft 1 x Silver Short Turn 3 x Black Knurled Post 10 x Yellow Shelf Bit 3 x Color Post Silver