Stauff MD 025 E 20 B 4 Hydrauliek filters knie draaibaar 8024986271201 RL31 KNIE blank filter Element knie draaibaar 8024986271201 RL31 KNIE 10X1 4 DRAAIBAAR CONISCH Thread Reducer Thread1: BSPP Male R3 4 Thread2: BSPP Female R1 1 2 Steel Glass Fibre Outer Diameter (mm): 70 Inner Diameter (mm): 28 β ratio >200