Usage Tips:[Pure Copper Construction] Our alligator clips, constructed from pure copper, surpass ordinary metallic clips in terms of conductivity and durability; to oxidation, they a much more stable connection. The approximated length of each clip is 45mm (1.77 inches), perfect for handling testing scenarios. [Precision & Ease of Use] Featuring perfectly aligned jaws with a smooth , these clips facilitate effortless and secure attachments to conductors. Each clip is designed with an opening range of about 10mm and is accompanied by a sturdy brass body that significantly simplifies the soldering process. [Enhanced Solderability] Engineered for effectiveness, the brass surfaces of the clips are particularly amenable to soldering, ensuring strong, reliable connections from the wire to the point of application, thereby optimizing operational reliability and efficiency. [Highly Insulated] Each clip comes with a smoothly finished, high-tolerance insulating cover, which can be further secured using hot-tolerance glue during extensive usage scenarios. This feature ensures safety and ease of handling during tests and applications. Please note:There is a slight color difference or difference in kind, it does not affect the use, please do not mind, thank you! Colour:Black & Red Material:copper Package Contents: 20 * Alligator Clips Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.