These alligator clips are used in certain electrical applications. This bag of 24 clips have black PVC on both sides. The color of the PVC helps you to identify positive and negative charge. It is universally accepted that red will be the positive, and black will be the negative side. Item has a length of 1-3/8".

* 24 pieces of #3 size alligator clips with tiny teeth for gripping | 3/16" jaw opening length

* Black PVC on both handles to help prevent shock danger when working with electronics

* Used by electronic experts everywhere to work with electrical circuitry

The black is generally accepted as the universal color for the negative charge

This bag of 24 pieces is excellent for the professional handyman or electronics technician