SAWYER Outdoor Water Purification Filter Spare Parts Bucket Bucket Conversion Inline Quick Fill Adapter Screw Coupling Kit Sawyer Accessories (SP150 Coupling)

Beautiful and quality product. I advise.

Very useful gadget. But twenty quid! Really? That's more than half the price of the filter I use it with.

Saves carrying the cleaning syringe, very useful if you already use your filter directly on a standard drinks bottle. Note that if you buy the newer Sawyer micro (not the Mini) it comes with one of these included.