For safety reasons, please use power tools of high speed rotation 2500 rotations/m or less.
If you are using an electric drill, please use low speed rotation during the start and end of screw tightening.
Ideal for installation work of handrails for nursing fittings, stair handrail fittings, and hinge reinforcement metal fittings.
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Due to the structure of the door, it was in a state where little distortion was not allowed when hinge mounted, but it was possible to work smoothly thanks to the size of the Star M Center center one and double drill bit drill M size. It is good to get it because it seems that it can be used not only in hinge but also in various scenes from now on.