Stauff FI GE 20SR1 W3 MS Balanceerkleppen HC9800FCT8H blank filter Element HC9800FCT8H Straight Male Stud Fitting Size Type: 42L 1 BSP Zinc Nickel Plated Straight Male Stud Fitting Size Type: 20S 1 BSP Metallic Sealing with Cutting Ring & Union Nut Steel