Specifications: Strong magnetic, can suck the screws easily when used it. Can be used for manual electric screwdriver, screwdriver, drill, air and other tools. Exquisite workmanship, each edge can be accurately locked screws, no damage to the screw, and the screwdriver head. S2 high quality steel, this batch of head using S2 high quality steel, batch head surface for steel material color, from inside to outside are the same. Good material does not need to make the surface decoration through the exterior decoration, the quality of the batch is to look at the intrinsic material. Type: Cross Screwdriver Bits Material: S2 Steel Shank: 6.35mm (1/4inch) Hex Bit Dia. Length: PH1: 3.0 150mm PH1: 4.5 150mm PH2: 4.5 150mm PH2: 5.0 150mm PH2: 6.0 150mm Features: Durable, Magnetic, Multi-purpose Length: 15cm/5.91 (Approx.) Notices: PH0 is suitable for small appliances and precision apparatuses; PH1 is suitable for major and small appliances; PH2 is suitable for household screws and major appliances. Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 6 x Cross Screwdriver Bits