Features Necessary components for PCB testing: Spring test probes are necessary components for PCB testing. They are used to contact components on printed circuit components. Spring contact probes are sensitive and accurate. No trace test: The spring test probe pin is soft contact, using these spring probes for testing will not easily leave dents on the PCB, you can use it with confidence Size: Probe tube diameter is 0.68mm, probe rod diameter is 0.48mm, probe length is 16mm, bore size is 0.9mm, minimum test interval is 1.27mm Application: Round head pin spring probe with current rating of 3A and resistance of 50mΩ, widely used to test PCB golden fingers (edge connectors) and pads Packing: The round head pin spring probe set contains 100 spring test probes. You can use it for a long time without worrying about losing or damaging it and you need to buy a new one. Features: Spring test probes are necessary parts for PCB testing to access components on printed circuit assemblies. There are total 100 pieces spring test probes in one set that you can use for a long time. Soft contact, testing with these spring probes will not easily leave dent on PCB. Widely used for testing PCB gold fingers(edge connectors) and pads. Round head pin spring probe are great replacement probes if you need to change broken or old test probes.  Specifications: Head Shape: Round Current Rating: 3A Resistance: 50mΩ Stroke: 2.6mm Probe Tube Diameter: 0.68mm Probe Rod Diameter: 0.48mm Probe Length: 16mm Boring Size: 0.9mm Min. Test Interval: 1.27mm Quantity: 100pcs Package Includes: 100 x Probes Package List