Oneway Clamp Block 2-1/2 in. Gap is an essential accessory designed to securely attach various Oneway tools such as the Bowl Steady, Spindle Steady, and Easy Coring Systems to the bed of your lathe. This clamp block is specifically made to fit lathes with a 2-1/2 inch gap between the bed ways, ensuring a precise and stable connection. Measuring the gap between your lathe's bed ways will help you select the correct clamp block size for your setup. Crafted with quality and compatibility in mind, this clamp block enhances the functionality and safety of your woodworking projects. Model Number: 3154-244