The RM Suttner ST340 Swivel can help minimize strain on the users wrist and arm by allowing the gun or to rotate freely. This can be beneficial during prolonged pressure washing sessions, reducing the risk of fatigue or discomfort. Swivels also allow for easier movement and rotation of the spray gun or nozzle. This can be especially useful when you need to reach tight or awkward spaces, such as corners or angles. This swivel has an internal bore of 10mm.