Features 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 Hook Material: ABS, Nickel Plated Brass Purpose: Used For Accurate Circuit Testing / Power Supply Working Frequency: Low Frequency Package List 4 x Test Hook (Red) 4 x Test Hook (Black) 4 x Test Hook (Yellow) 4 x Test Hook (Blue) 4 x Test Hook (Green)