Made from solid acetal bar stock, these bushings work great to adapt your live sonar Fish Obsessed and Oem style mounts to reduced shaft sizes. Use them on stand alone pole systems, turret style mounts, or your homegrown creation. These bushings are 2.0" in length with an outside diameter of 1-3/8". Select the Inside clamping diameter of your choice. Custom sized bushings available upon request and may include an up charge.