Description: This scuba diving high pressure swivel spool is designed for secure and reliable connections for your SPG and gauges. Its construction ensures it can withstand the challenges of underwater use, providing long-lasting performance. The easy-to-use design allows for quick installation and adjustments. With precise dimensions of 9mm (0.35inch) outer diameter and 18mm (0.71inch) length, it offers a perfect fit for your diving equipment. Compatible with a wide range of scuba gear, it's a versatile addition to any diver's collection. Package Includes: 2 Pieces Scuba Diving Swivel Note: Please allow slight differences due to manual measurement. Color may vary slightly due to different monitor settings. Thank you for your understanding!