Features: 1. This pair of test tools can easily puncture the power cable. 2. With 4mm socket, it is convenient with multimeter testing probe. 3. Widely used for vehicle maintenance, electrical test or industrial test. Specifications: Colors: Red x 5, Black x 5 Length: About 128mm Head Diameter: 2mm Plug Hole Diameter: 4mm Material: Polyimide + Brass + Stainless Steel Finish: Nickel Plating Practical tool for vehicle maintenance, electrical test or industrial test. It is convenient to get out of the multimeter testing probe. Package Including: 10pcs Tip Test Probe Note: The item color displayed in the pictures may be showing slightly different on the computer monitor since the monitors are not calibrated same. Please allow slight deviation of 1-2mm due to manual measurement. Thank you!