Feature:1. Applicability: It is used for accurate circuit testing/power supply. It is a good tool for self connecting a connection with a power supply or a multimeter.2. Strong Elasticity: There is a spring on the front end of the clip, which is stretchable. The clip of the clip has strong elasticity and can hold the object firmly.3. Good Protection Performance: It is better to prevent short circuit caused by touching the feet.4. Material: Pure copper metal sheet, higher conduction rate, welded, built in spring, can firmly hook the test contact.5. Easy to Install: Long service life, good electrical conductivity, and corrosion resistance.Specification:Item Type: Flat Test HookMaterial: ABS, Nickel Plated BrassPurpose: Used For Accurate Circuit Testing / Power SupplyWorking Frequency: Low Frequency.Package List:20 x Test HookNote:Prevent it from being placed in high temperature to avoid damage