Description
If your screwdriver takes 1/4” bits and you want to use 4mm bits. This adapter is for you.or your screwdriver handle holder size is 1/4”/6.35mm and you want to use 4mm bits to work..for Extra hard with natural finish for durability and strength..There are 3 different types sandblast/nickel-coated/chrome-coated, choosing according to your needs..Made of modified tool steel with high hardness..Screw driver bit adapter with very easy to operate while working.