The Mosmatic DGV Swivel is designed for HP-Guns, hose connections, hydraulics, tangle-free applications. They are considered maintenance free and offer live rotation under maximum pressure. The DGV Swivel is a single bearing system with stainless steel internal parts, corrosion resistance, reinforced inner shaft. Up to 4000 psi and 30 max RPM. Very popular HP gun swivels with multiple configurations.