Square drive bits for Robertson head screws. The collection includes Diablo 1" #2 square drive bits in a 25-pack, 2" #2 square drive bits in a 15-pack and a 3-piece set of 2-1/2" assorted double-ended square drive bits.
The #2 square bit fits the most common construction and cabinet screws; check the screw head if in doubt. Short bits suit compact drivers and bit holders, while longer or double-ended bits reach recessed screws. Choose impact-rated bits for impact drivers, and buy bulk packs for high-volume fastening.
