The SCS3/0-X Copper Compression Lug Lug, standard barrel, has color-coded barrels marked with Panduit and specified competitor die index numbers for proper crimp die selection. An inspection window aids to visually assure full conductor insertion, and the tin-plate material helps to inhibit corrosion. Features internal wire stops. NEBS Level 3. UL Listed and CSA Certified to 35 KV and temperature rated to 90°C.