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Aluminum - Tin Plated - Mechanical Connector for Range of 600 kcmil - #4. CU9AL. CSA/UL listed - Length 2-3/4 inch - Width 1-3/8 inch - Height 1-1/2 inch - Pad Thickness 5/16 inch with One 7/16 inch Diameter Hole - Tapped 7/8-14 UNF-2A - Includes One Tin