Tankmaster Olive (available in 3/8" or 10mm).

Suitable for use with both the Mark I and Mark II Tankmaster (the only difference between these is the depth of the filter bowl).

Note: Price is per item (two views are shown in the picture to help identify the item on offer).

Note: Use the 3/8" Olive on old 3/8" oil pipe and the 10mm Olive on modern 10mm oil pipe.