The 1/2” Long Pre-formed coil (MD99-606) works best with 3/8" fasteners and smaller.
The MD99-606 coil will last for several hundred uses or more subject to use. Use of the proper size coil, avoiding abrasion and overheating prevents premature wear to the coil.
All coils are plated to eliminate oxidation and guarantee contact.
The coil insulation is coated to resist abrasion; however, if insulation is breached a new coil will need to be used.
The coils are all flexible and can be bent or separated for a variety of applications.
The extra-long leads work great for hard to reach areas that are difficult to reach with shorter coils or a torch. Around corners or buried deep near plastic or rubber; simply bend to your desired configuration.