Usage Tips:Features: The test probe with a standard 4mm banana plug test lead connection, it works with most test lead kits in the field. Suitable for automotive, industrial, HVAC, electrical, marine, etc. for Sharp 7/10 mm needle tip, they are used for piercing the insulation of wires to allow for automotive electrical measurements without causing damage to the wires. The test probe is used for back-probing harness connectors and automotive sensors. Made of stainless steel, P-A & brass, durable, sturdy & long for time service. Specifications: Material: stainless steel+PA+copper Length: approx 7.7cm/3in Connection: 4mm Banana Plug Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 5x Pin Test Probe