Screwdriver Bits, Brand Name : bluetooth

We are offering single end screwdriver bits with ribs. 1.s2 or crv tool steel, durable and presision 2.s2 hrc 59-61, crv hrc 58-60 3.forged 4.finish: sand blasted 5.length:25mm, 50mm,70mm,90mm the rib can grip screw recesses tightly, then reduce the risk of camout during the using.the special technology of processing raises the stability of material, then permit higher applied torque.