Specifications Two Steel Black Speaker Pole Mounts Accepts a 1 3/8" Speaker Pole 3 3/4" Shaft Depth Mounting Plate Overall Dimension is 4 5/16" 2 1/4" Horizontal Measurement from Screw Hole to Screw Hole 3 1/4" Diagonal Measurement from Screw Hole to Screw Hole Cabinet Hole Cutout Size is 1 1/2" Requires Screws that are NOT Included This Price is for Two Pole Mounts