20Pcs Pack SC25-10 Tinned Copper Lug Terminals with 3/8" Stud for 4 AWG Battery Cable 20 pcs tinned copper terminal logs SC25-10 One-piece seamless construction, 1mm-wall copper tube for superior conductivity, closed-end 7.0mm inside diameter fits 4 AWG (4 Gauge) battery cable Stud (screw) Size 3/8" Working Temperature: -55C to +150C. Certificate: ISO9001-2008