Aluminum Mechanical Lugs Two Conductors - One Hole Mount 250MCM-#6 Awg - One Hole Aluminum Mechanical Connectors provide for Flexibility in Installation.Aluminum Mechanical Lugs Two Conductors - One Hole Mount 250MCM-#6 Awg features include: One Hole Aluminum Mechanical Connector is manufactured from high strength 6061-T6 Aluminum Alloy to insure both maximum strength and conductivityAL9CU Dual Rated for both Copper and Aluminum Conductors Electro-Tin Plated to provide low contact resistance and protection against corrosion Assembly can be made with only a screwdriver or allen wrench and they are re-usable NEMA Standard Mounting Hole Drilling 1-3/4 Centers 90812-90814 have slotted screws Aluminum conductor is rated 600V 194deg F (90deg C) UL486B/CSA Listed Dimension Measurements = Inches Order Qty of 1 = 1 Piece Below is more info on our Aluminum Mechanical Lugs Two Conductors - One Hole Mount 250MCM-#6 Awg