This lug compression connector is engineered to provide a high degree of reliability in electrical wiring. The design also helps electrical professionals perform installations quickly and easily. The T&B method utilizes compression tools with matching dies to form the connector and conductor into a solid, homogenous mass, which helps to provide an optimum electrical bond between the connector and conductor.Specification: Item: One-Hole Lug Compression ConnectorConnector Type: Straight BarrelCable Size: 4 AWGTongue Style: StandardColor Code: GreenDie Code: 37Length: 2.03"Barrel Length: LongMaterial: AluminumPlate Material: TinStud Size: 5/16"Hole Center to End: 0.440"Width: 0.66"Peep Hole: No"