160 piece set includes 80 thickened copper lugs for ring terminal connectors and 80 heat shrink tubing to provide reliable connectivity for AWG 2, 4, 6, 8, 10/12 wires and meet diverse electrical wiring needs Long lasting performance driven by heavy duty copper construction with a close end pad design that offers improved resistance to temperatures and helps forestall moisture damage, securing and stabilizing electrical connections over time Enhanced protection comes from 3:1 dual wall heat shrink tubing made of polyethylene with hot glue, providing strong insulation and sealing connections against exposure for lasting durability in outdoor, marine, solar, and vehicle applications For easy installation the precut shrink tubing allows quick, accurate work with visual confirmation of proper wire insertion, making terminal crimping fast and efficient without guesswork Use scenarios Automotive and vehicle wiring: reliable ring terminal connections for battery cables and power leads in cars, trucks, or motorcycles Marine and outdoor equipment: durable connections that resist moisture and temperature variations on boats, docks, and shore installations Solar and RV systems: secure, insulated terminations for solar arrays, inverters, and auxiliary power setups in outdoor environments Key attributes Function: thickened copper lugs for ring terminals; compatible with AWG 2, 4, 6, 8, 10/12 wires Compatibility: ring terminal connectors and corresponding heat shrink tubing included Size: standard 160 piece kit with 80 lugs and 80 precut heat shrink tubes Material: copper lugs; 3:1 dual wall heat shrink tubing with polyethylene outer layer and hot glue inner layer Performance: temperature resistance, moisture prevention, durable seals for harsh environments