Pacer Group Tinned Lug 4 AWG - 1/2in Stud Size - 10 Pack One Size. This connection commonly referred to as a cold weld creates a solid long-lasting connection. Pacer lugs are made from 100percent pure copper for high conductivity. This copper is fully annealed to prevent cracking while being crimped and while in service. These terminals are also tin-plated to prevent corrosion and many of these lugs are general-purpose seamless electrical terminals. They are commonly used with battery cables.Features:Tin-plated copper with no exposed seams offering 100percent long-term conductivityTinned copperHighly durableMultitude of sizesEasily terminatedInfield applicationsLong-lastingCompliances:E.T.P. (Electrolytic Tough Pitch) CDA-110ASTM-B-152 CopperRoHS CompliantCSA ApprovedUL ApprovedSpecifications:Wire AWG: 4 AWGStud Size: 1/2"Length (inch): 1.625"Width (inch): 0.766"Clearance (inch): 0.469"Package Size: Ten included Package Contents: Pacer Group Tinned Lug 4 AWG Pacer Group TAE4-12R-10: Tinned Lug 4 AWG - 1/2in Stud Size - 10 Pack One Size