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