FCGD – Drill bits for drilling in concrete with a conical shank

Drill bits with a conical shank are used for hammer drilling in concrete for pins used for fixing thermal insulation on flat roofs. The drill bit is clamped in an adapter with a length of 270 to 800mm, and then a hole is drilled in the concrete through the insulation. The screw of a pin for fixing the insulation is driven into the borehole.