Precision Engineered for Compatibility: Specifically designed to fit for Hayward Superpump models including SP1600X5, SP1605X7, SP1607X10, SP1608X10, SP1610X15, SP1611X15, SP1615X20, SP1616X20, and SP1621X25, ensuring a perfect match for your pump's requirements. Versatile Fit for MaxFlo Pumps: This swivel nut and knob also seamlessly integrates with the for MaxFlo pump model SP2810X15. Crafted for durability and long-lasting use, this replacement part maintains the efficiency and performance of your pool pump. Optimal Performance and Durability: this robust replacement part is engineered to withstand rigorous use in various pool environments. Its heavy-duty construction ensures it can cope with the mechanical demands of pool pumps. Easy Installation: The design of this swivel nut and knob allows for a straightforward installation process, enabling you to quickly replace the worn-out parts without needing professional help. This means less downtime for your pool and more time enjoying it. Enhance Your Pool's Efficiency: Regular maintenance of your pool's pump, including timely replacement of essential components like the swivel nut and knob, can significantly improve its performance and efficiency, leading to better water circulation and filtration. The product appearance may vary depending on the batch, but this does not affect use. Quantity:1set Color:Black Material:plastic Package Contents: 1 * rotating nut 1 * knob Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.