MPQ4399 Features: * One conductor extruded copper connector * Best for copper wire connections * Made from extruded copper for superior mechanical strength and excellent electrical performance * Steel screw * Suitable for use with copper wire only * UL / CSA listed * Wire range: 1/0-14 * Bolt: 0.27"" * Box quantity: 50 Specifications: * Rated 600V Dimensions: * Dimensions: 0.66"" H x 0.55"" W x 1.28"" D Warranty: * 1 Year warranty