For use by professional Locksmiths to open locks without the key.
Includes (2) complete set of extra springs, (3) straight picks, (3) angle picks, (2) tension wrenches.
With a snap of the finger, the tempered steel needle (pick) strikes the bottom pins sharply. This force is transferred to the upper pins and they rise in the chambers, momentaruly creating a large shear line. Pressure from the tension wrench then turns the plug to the open position.