These alligator clips are a must-have for anyone in the industrial and scientific fields. Thanks to my knowledge gained in practice, I can confidently say that these are some of the sturdiest and most durable clips out there. The heavy-duty insulation ensures that I can work with them safely and confidently. The only downside is that they are a little on the expensive side compared to other clips out there. But, the quality more than makes up for the cost.