Features: lt; br/gt; There are 3 different types of sandblasting/nickel coated/chrome coated, choosing according to your potrzeb.lt; br/gt; If your screwdriver has 1/4" bits and you want to use 4mm bits. This adapter is for you. Or your screwdriver handle is 1/4"/6.35mm and you want to use 4mm bits to pracy.lt; br/gt; Made of the highest quality modified tool steel with high hardness. lt; Br/gt; Extremely hard with a natural finish for durability and strength. lt; Br/gt; Exact fit machined precision tips for a secure hold, always secure. lt; Br/gt; Screwdriver bit with magnetic, very easy to operate when working. lt; Br/gt; Specifications:Material: Tool SteelHex Size: 1/4"Length: 25mm/ 1.0in.Note:Please allow 1-3cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Included:1x Screwdriver Bit Adapter