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#10-#12 Spanner Fasteners
#10-#12 Spanner Bit
A hex shank with a screwdriver tip at one or both ends to loosen and tighten fasteners
Professional grade double-ended 1/4 in bits, hardened to a 59 Rockwell
Spring loaded, ball bearing bit assembly grasps bit snugly every time
Solid steel shaft runs the full length of the driver for balance and strength
Palm saving rotating cap covers easy access bit compartment