Screwdrivers Hollow-Ground Concave Set of 10

These hollow-ground screwdrivers have a concave curve on each side of the sharp, flat tip. This tip provides smooth, even power transfer with complete metal-to metal contact between the tip of the bit and the entire screw slot, making slipping and damaging a screw head much less likely. Assortment features ten screwdrivers with smooth operating, color-coded ball bearing heads, fine knurled handles and extra blades. Swiss made.