Stauff RN 030 B 40 B NB IndraDrive 0151RK015BN4HC blank filter Element 0151RK015BN4HC Straight Male Stud Fitting Size Type:22L M33X2 β ratio >2 Replacement Filter Element for Return Line Filters Micron Rating: 40 µm Material: Stainless Mesh Outer Diameter (mm): 55 Inner Diameter (mm): 26 Length (mm): 168 Sealing: NBR