Fluke TP81 insulation piercing clamps for insertion into the insulation of cables with diameters from 1 to 1.6 mm. You can adjust the needle depth to minimize damage to the insulation. Indispensable for work in the engine compartment or on the dashboard, for use on injectors or sensors. The insulation is retained through the design of the measuring tips. Fluke TP81 can be connected to test leads with banana plugs