This Pentair Clamp Ram & Cam is a high-quality replacement part designed to fit both Optiflo and Jacuzzi JPA Pro Grade Above Ground Pump models. With a 5-1/8" inner diameter and 10-1/8" outer diameter (ear to ear) and 6-1/2" outer diameter, this clamp ram and cam ensures a perfect fit for optimal performance. Upgrade your system or perform a quick fix with ease using this reliable and durable replacement part.