The Sperry instruments heavy duty comfort leads are rated for cat 3 -1000V testing. With a flexible 40 inch length cord you can easily hold and guide the test lead without influencing the measurement (by becoming part of the electric circuit) or being exposed to dangerous voltages. The double insulated leads are tough, durable, and long lasting. Each lead is supplied with a safety cap to protect the lead when the metal tip and has a right angle connection for ease of use. This premium test lead kit features one positive and one negative test lead, ideal for use in voltage, current, and resistance testing. The comfort grip test leads fit most meters, including those from Gardner Bender and Sperry Instruments. These high-end Replacement leads are professional quality at an economical price-point..