HexTap DS
HexTap - TriBit
Multi-Drive Tap HexTap DS
These are special hand taps with two-in-one pre-tap and final cutter. This tool developed by Völkel is particularly suitable for difficult to access areas and for recutting or repairing damaged threads. This tap can be driven from both ends with a ratchet or offset screwdriver, or at the middle part consisting of an external hex, again using an open-ended spanner.