These air line extensions are designed to move the quick connect coupler further away from the workpiece and provide clearance for the additional items used in clean sanding applications. This helps to prevent accidental contact and potential damage to the tool and its attachments. Air extension hoses are capable of provided maximum airflow to pneumatic tools. They are also very flexible, which provides greater mobility and operator comfort. This is a must-have for optimum power tool usability. The Swivel quick change connector accessory can also allow the air hose to be shifted away from the filter bag or vacuum hose connection in clean sanding applications when direct connection of the quick coupler to the tool is desired. WARNING: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.