COMPATIBILITY 493033 Diagnostic Adapter Cable fits for Cummins engines with 3 or 2 pin connector, for Nexiq USB Link 3 and USB Link 2 MATERIAL This product is expertly crafted from premium materials, including premium copper and durable rubber, to ensure long-lasting durability. The copper used is of the highest purity, ensuring strong electrical conductivity. The outer layer is made of robust rubber, designed specifically to provide protection against abrasion, corrosion, and environmental factors, effectively shielding the inner components from physical damage FEATURE .