Hollow punch for installing reversing radar

This kit is designed for installing reversing radar detectors on front and rear bumpers for all types of vehicle.
You just have to make a Ø 8.5 mm pre-drilling, you will obtain a hole that does not need deburring and does not damage the paint, which allows you to retrofit a parking kit or repair a damaged vehicle.
Specially developed quenched steel ensures sharp cutting and very good resistance.
13mm hex-head 8 mm screw.
In a kit or individually so you can acquire just what you need.
Utilisation:
With a drill bit dia. 8.5 mm, make a hole at the chosen place.
The part with the interior thread is positioned inside the bumper.
The sliding die cutter on the screw must be inserted outside the bumper.
Then use the punch with the appropriate size and then a manual ratchet wrench or a pneumatic machine (socket 13).