Often in the repair of threaded holes used hand tools — tap for mounting which uses a special tool holder — handle, and each diameter requires its own hardware. Young innovators Kyiv repair and mechanical plant has developed and introduced the universal knob. It is suitable for taps of various diameters — with squares from 5 to 15 mm. Feature of the device in that the clamping plate has a movable biscuit, freely connected with a threaded handle. Rotating it, you can increase or decrease the clamping hole by the movable rusk, holding the tap.
Universal tap wrench:
1 — threaded grip, 2 — clamp clip, 3 — medium dry, 4 — stationary biscuit, 5 — tap.