RED WOLF 4 AWG 5/16" Battery Cable Lug 10 PCS w/3:1 Heat Shrink Tubing for Wiring Insulation Black Red 10 PCS for Automotive Electrical 4 Gauge Wire Copper Lug Marine Grade M8 Ring Terminal Ends

Specification: Come with 10 PCS 4 awg 5/16"(M8) wire copper lug and 10 PCS 3:1 ratio heat shrink tubing (5 PCS RED and 5 PCS BLACK) | Heavy Duty Ring Terminal: 4 gauge terminal end is crafted with pure copper for better conductivity for maximum current flow; Closed end pad allows reliable wire connection while the wide and even ring edge offers stable circuit with less power consumption; Arc-shape design for not easy break construction | 12.7MM Heat Shrink Tube: 3:1 heat shrink wrap used for wire insulation when installation, reducing risk of electric shock; Adopt double wall glue inside adhesive lined, with coated hot melt adhesive to prompt the sealing waterproof performance; Outer wall provides abrasion resistance; Terminal copper lug is resistant up to 257F, 600V for safety and reliability | Straightforward Installation: Flared opening end of 4 gauge cable lug connector enables easier cable insertion; Insert wires into end of copper lug and crimp securely; Use included heat shrink tubings to insulate the connection point | Wide Electrical Application: 5/16" terminal end is mainly used in electrical stud wire connection, suitable for distribution box, car, RV, yacht, caravan, and ship power system, etc | NOTE: Before purchasing, check whether the size of the M8 battery ring lug meets your requirements