Holes are drilled in the center of the screw mounting holes.
[Use]
0.09 inch (2.4 mm) drill for mounting handrail fittings and hinges.
Features:
Can be drilled in the center of mounting holes on handrail fittings, hinges, and reinforcement hardware.
Two-way detachable chuck makes it easy to put on and take off the bit.
Can be used with impact drivers.
[Precautions]
Use with electric tools less than 2,500 rpm.