BUGNUT, SPLIT BOLT CONNECTOR, COPPER, 4-8 AWG GB ELECTRICAL # GSBC-4 Copper split bolt made from high-strength copper alloy allowing maximum conductivity and high breakage resistance. Precision tooled threads allow maximum torque to be applied. UL (Underwriter's Laboratories) listed, CSA (Canadian Standards Association) certified. No. GSBC-8: Wire Gauge: #16-#10 AWG Stranded, #16-#8 AWG Solid, Material: Copper Alloy, Range for Equal Main and Tap: 8-16, Min Tap with one Max Main: 10-10, UL Listed?: Yes, Pkg Qty: 2, Package Type: Clamshell No. GSBC-6: Wire Gauge: #10 AWG Stranded, #10-#8 AWG Solid, Material: Copper Alloy, Range for Equal Main and Tap: 6-16, Min Tap with one Max Main: 6-6, UL Listed?: Yes, Pkg Qty: 2, Package Type: Clamshell No. GSBC-4: Wire Gauge: #8 - #4 AWG Solid, Material: Copper Alloy, Range for Equal Main and Tap: 6-14, Min Tap with one Max Main: 8-8, UL Listed?: Yes, Pkg Qty: 2, Package Type: Clamshell No. GSBC-2: Wire Gauge: #6 - #2 AWG Solid, Material: Copper Alloy, Range for Equal Main and Tap: 2-14, Min Tap with one Max Main: 6-6, UL Listed?: Yes, Pkg Qty: 2, Package Type: Clamshell No. GSBC-1/0: Wire Gauge: #4 - #0 AWG Solid, Material: Copper Alloy, Range for Equal Main and Tap: 1/0-14, Min Tap with one Max Main: 4-4, UL Listed?: Yes, Pkg Qty: 1, Package Type: Clamshell No. GSBC-2/0: Wire Gauge: #2 - #00 AWG Solid, Material: Copper Alloy, Range for Equal Main and Tap: 2/0-14, Min Tap with one Max Main: 2-2, UL Listed?: Yes, Pkg Qty: 1, Package Type: Clamshell No. GSBC-3/0: Wire Gauge: #2 - #000 AWG Solid, Material: Copper Alloy, Range for Equal Main and Tap: 3/0-8, Min Tap with one Max Main: 1-1, UL Listed?: Yes, Pkg Qty: 1, Package Type: Clamshell