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Drainage holes cutter for rockwool slab is designed for manual cutting of holes in a foil covering mineral wool blocks.
Holding the cutter by the handle, put the disc in the place where you want to be the hole. Press the knob down. Nails pierce the foil and dig into the wool. The disc presses the punched foil. Movable part of the cutter starts a rotation during which the cutting knife cuts a circular hole.
All elements of the device are protected against corrosion: