Review on 8Pcs UL Heavy Duty 4 AWG 5/16" Stud Battery Cable Lugs Tinned Copper Tubular Ring Terminal Connectors DIN 46235 - AIRIC 4 Gauge Wire Lugs by Brandon Peters

Some of the best quality lugs I’ve used and they are tinned copper so you don’t have to worry about them corroding. The metal is NOT super thin you’ll definitely need a hydraulic crimper or one of the hammer crimpers to get it on there properly you can’t use a pair of wire strippers to crimp down one of these things. A++++