Aluminum Mechanical Lugs Four Conductors Dual Set Screws - Four Hole Mount 250MCM-#6 Awg- 4 Hole Aluminum Mechanical Connectors provide for Flexibility in Installation.Aluminum Mechanical Lugs 4 Conductors - 4 Hole Mount Dual Set Screws 250MCM-#6 Awgfeatures include: 4 Mounting Holes in Pad allow for 4 Bolts when Mounting these 4 Conductor Mechanical Lugs 4 Conductor Aluminum Mechanical Connector is manufactured from high strength 6061-T6 Aluminum Alloy to insure both maximum strength and conductivity AL9CU 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 Aluminum Connector is rated 600V 194deg;F (90deg;C) UL486B/CSA ListedDimension Measurements = Inches Order Qty of 1 = 1 Piece Below is more info on our Aluminum Mechanical Lugs Four Conductors - Four Hole Mount Dual Set Screws 250MCM-#6 Awg