ITEM NAME:140PCS Copper Wire Ring Terminal Lug SC Battery Welding Bare Connectors Set T1C4 140PCS Copper Wire Ring Terminal Lug SC Battery Welding Bare Connectors Set T1C4.Made from 100% Annealed Copper for Max Current Flow. Wire & Stud Sizes Stamped on the Pad. Heat Shrink Tubing 80 Heat Shrink Tubing Cover.