On-Stage Stands SS7745 Adjustable Subwoofer Attachment Shaft, Pole for Mounting Satellite Speaker atop Subwoofer. Subwoofer Mounting Pole Count on Industrie Music to have the stands and accessories you need! Whether it's a mic stand, keyboard stand, guitar stand, or other accessory, Industrie Music is your source for quality stands at reasonable prices. Subwoofer Attachment Shaft The Subwoofer Pole is a 31" long pole for mounting speakers atop a subwoofer. The Subwoofer Pole is designed specifically for use with satellite systems involving a subwoofer cabinet with a top mounting hole. Professional Subwoofer Attachment Shaft Features: Upper Shaft Tubing: 1 3/8" Lower Shaft Tubing: 1 3/8" Shaft Length Adj.: 36"-60" Weight Capacity: 80 lbs. Tech Specs Type: Sub Pole Load Capacity: 80 lbs. Height: 31.5"-55" Color: Black Stand Material: Steel Tube Diameter: 1.375" (35mm) Manufacturer Part Number: SS7745