Sufficient Quantity for Replacement: you will receive 4 pieces of car cable test tools in black and red colors totally, 2 pieces for each color, practical tools for auto testing and repairing Quality Material Selection: the cover of our piercing probe is made of quality PA material, insulated and safe, and the needle is made of solid stainless steel, strong against breakage or rust, serving you for periods of time use Strong Compatibility Functionality: our wire testing kit is compatible with 4 mm banana plug, stable and utility on working performance, and you can use it with confidence Versatile Performances: these accessories are perfect for multimeter, audio cable, speaker cable and banana plug, available for automotive maintenance, power testing, industrial field testing or cable testing Easy Tools to Use: duty test leads are simple to use, and there is no need for stripping the cable, not affecting the service life or condition of the cable and power equipment Sturdy manufacturing: This automotive test lead set is manufactured with quality materials, sturdy and reliable, not easy to abrade, fracture or crack, and it can stay well in its original state as time goes by. Specifications: Material: Cover: PA Needle: stainless steel Color: black and red Size: Whole length: . 143 mm/ 5.63 inches Needle length: . 4 mm/ 0.16 inches Package Contents: 2 x Black auto puncture probes 2 x Red auto puncture probes Warm notes: Pricking risks may exist, please keep them away from . Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.