Safety and Durability - Testing the rated current Cat III 1000V and Cat IV 600V 10A are safe and very suitable for all types of multimeters, such as clip on multimeters, digital multimeters, and desktop multimetersUniversal compatibility - there are three different connectors that can be replaced: alligator pliers, needle probe and mini hook. The test line can meet different test requirementsHigh quality material - this test line kit is made of durable, non-toxic and environment-friendly double insulating silica gel, which will not harden after 24 hours in the refrigerator Use 48 wires "It is very suitable for any multimeter and multimeter clamp. The core is composed of 105 0.001 mm copper wires and nylon wires. The test wire kit has excellent tensile and bending strength, low strength, and conductivity, which is very helpful to electricians and electronic product maintenance personnel. Quality - We use high-quality materials to ensure the durability, durability, durability and durability of the test wire. Good flexibility, antifreeze and heat resistance. It can withstand a low temperature of - 68 F and will not harden in winter