Reliable Quality: The probe pin is made of premium High-quality materials, the material is hard and study, which is not easy to bend and deform. It is waterproof and rust-proof, which has a long service life Sizes: The total length of the probe pin is about 3.27 in (83 mm), the diameter of the probe pin is 0.03 in (0. 7 mm), the diameter of the female plug socket is 0.15 in (4 mm) Compatibility: It works with standard 4 mm banana plug test leads and is suitable for most test cathode wire kits Wide Application: The multimeter probe is widely used in marine, automotive, industrial, air conditioning, electrical and other fields for diagnosis, testing and maintenance equipment Colour:Mixing Color Material:plastic Package Contents: 10 x Wire Piercing Probe Only the above package content, other products are not included. Note: Light reflection 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.