Shredder adapter for a mason jar

An adapter, comprising:

• a body cylindrical on one end and having a shape of a regular polygon on the opposite end, with an outer diameter, a height, and a central axis;
• a first counter-bore concentric with the outer diameter on the cylindrical end, the first counter-bore having an internal thread compatible with a thread on a neck of a conventional Mason jar, and ending at a horizontal shoulder;
• a second counter-bore from the end having the polygonal shape to a depth, ending in a second horizontal shoulder, the second counter-bore having an o-ring groove housing an o-ring implemented on an inner diameter of the counter-bore enabled to engage a female thread of a commercially-available herb grinder;
• and
• a through bore concentric with the central axis passing through the adapter and providing a common inner diameter through the first and the second horizontal shoulders;
• wherein the adapter only makes contact with the commercially available herb grinder at the o-ring at an upper edge of the adapter and only makes contact with the Mason jar at the course female thread.