Split bolt, aluminum, No. 2 stranded conductor (STR) - No. 8 stranded conductor (STR) American Wire Gauge (AWG), dual rated. Made from lightweight, durable aluminum alloy to resist corrosion and provide premium electrical and mechanical performance. Dual rated for use with aluminum to aluminum, aluminum to copper, and copper to copper conductor combinations. Tin-plated to inhibit corrosion and oxidation.Wide wire range-taking capability minimizes inventory requirements. True hex design for body and nut hex provides correct fit with socket, box, or open end wrenches resulting in proper torquing of electrical connection. Free floating pressure bar separates conductors of dissimilar materials for secure connection on a full range of conductor combinations. UL Listed and CSA Certified for use up to 600 V and UL temperature rated 90 degree C.