nickel plated, POM black plastic, 22.5L, plain end, 5.5mm, 2.1mm dc male power ... plug, dc connector plug nickel plated, POM black plastic, 22.5L, plain end, 5.5mm, 2.1mm dc male power ... 7. Outer Dia:5.5mm Inner Dia:2.1mm Length:22.5mm 8. Free samples 9. Technical index: Temperature-20°C ...