Post Base Single Channel 4 Hole Square for 1-5/8" Strut - A Square Fence Post Base with 4 holes.Post Base Single Channel 4 Hole Square for 1-5/8" Strut features include: Secures strut assembly to floor or other surface Side Orientation 4 Mounting Holes 6" x 6" Base Galvanized Steel Order Qty of 1 = 1 Piece Below is more info on our Post Base Single Channel 4 Hole Square for 1-5/8" Strut