About this item Compatible with 1 1/4' Diameter J Pole Mounts: Fits J pole mounts with a 1 1/4' diameter and available in 16.5', 33' or 49' lengths for versatile mounting options. 16.5' Extension Pole with Coupling Hardware: Includes all necessary coupling hardware for easy installation and secure mounting. Increased Vertical Height: Add extra height to your J Pole mount for improved signal reception and optimal antenna positioning. Enhanced Clearance: Extends the horizontal distance from the mount base to the curved J-pipe, providing better alignment and reducing obstructions. Included Hardware Notice: Your package contains two nuts and bolts in a sealed plastic bag. To locate them, please inspect the inside of each pole section. This step helps avoid unnecessary returns or inquiries. Dimensions: 16.5 x 1.25 x 1.25 inches.