Make a hole in the center of the countersink hole of the hinge and handrail metal fittings with one shot.
Features:
- Quick on target and score perfect hit in one-shot deal for hinge.
- The socket is detachable for both directions up and down.
- Attached double-end bit remains on the electric power drill, it can be used.
- Take off the guide, it can be used for steel drill.
