Features： 1、Purpose: Used for accurate circuit testing or power supply. It is a good tool to connect a connection with a power supply or a multimeter. 2、Nickel Plated Copper Sheet: Nickel plated copper metal sheet with higher conductivity, and soldered. 3、Spring Clip: The front end of the clip has a spring, which can be telescopic. The clip has strong elasticity and can hold the object firmly. 4、Easy To Install: Easy installation, long service life, good electrical conductivity, strong corrosion resistance. 5、Working Frequency: Working frequency is low frequency. Light weight, safe to use, high performance. Specification： Item Type: Flat Test Hook Clips Material: ABS, Nickel Plated Brass Purpose: Used for accurate circuit testing or power supply Working Frequency: Low Frequency Package List： 10 x Flat Test Hook Clips (Red) 10 x Flat Test Hook Clips (Black)