Check the listing for details. Zero-Max A906013 CD Coupling. Condition: Used. Listed at 98.50 USD. Same Day Shipping. Please review pictures carefully and let us know if you have any questions! inside diameter is 2 3/8" and the outside diameter is 6" At Interscope we know that with today's challenges, equipment maintenance and replacement can be costly; however we have a solution. Through our partnerships and program, we have access to an extensive inventory of new surplus and used components and assemblies that can not only deliver a significant cost savings, but also reduce lead time. We have a complete machine shop and manufacturing, fabrication, and assembly capabilities. We can rebuild assemblies, complete processing lines and other capital equipment at a substantially lower cost than new. In addition, we are always looking to purchase surplus and liquidated equipment. Let us bid on the equipment that you no longer want and/or need. Terms of Sale --> --> --> Shipping Information --> --> --> --> --> -->