Blumat thru-hull bulkead fitting

This is a bulkhead (or thru-hull) fitting that matches dimensions of the Blumat fitting for their 8mm drip tubing. Threads are M12. The nut is not a specific wrench size so use an adjustable wrench or pliers. Drill a 12mm or 1/2-inch hole in your bucket. You will need a rubber washer. In the USA you can use what is called a "shower head washer", example: https://www.amazon.com/dp/B0B9NHMX4X.