-10 Test leader & 5 colors : green×2,white×2,black×2,yellow×2,red×2-20 Clips by nickel plated steel with PVC insulators and vinyl-covered alligator clips, strong spring clips and easy installation-Length-20.5″, Test lead-1.6″ The clips soldered and stamping to the wires, Alligator clips securely to ensure good conduction-Wire: 22-AWG copper with PVC insulation, The test leads are handy for most light electronics works-Perfect for electrical testing such as experiments, breadboarding, prototyping, troubleshooting. Widely used in laboratories, shops, schools, home and industry. High-quality product