The 100317415 Thin Metal Wall Vacuum Hose is 9.84 inch (250 mm) in length with size NW40 ISO-KF vacuum flanges on each end. This unsheathed vacuum hose has a thin 0.06 in. (0.15 mm) stainless steel hose wall with a 2 1/2 inch static bend radius and can be compressed to a 6.23 in. (158 mm) length. Series 31 thin stainless steel wall vacuum hose can be used in rough piping applications.