crocodile clips and cables

yellow red crocodile clip alligator cables temporary electrical connection clips metal-clip cable nopeople electricity cut-out connection wire equipment technology clamp work-tools power-supply battery industry car signal input attachment clamps clip electrical-clips transfer-energy mechanical-device electronics-testing jumper link closeup plastic electronic short-circuit contact laboratory black isolated background grey red yellow white electrical-cable serrated-jaws connect plug electric cord alligator-clips crocodile-clips electrical-component school-lab project