Grip Grip Tetra Works Ajing Fish Grip

This is a Daiichi Seiko Garagrip.
It has a Tetra Works sticker on it, which was released last year (?).
A custom-made case is also included.
You can wash the grip with water while it's still in the case. It also prevents fish scales and other debris from getting on your clothes, as you can keep the grip inside while moving around during fishing.
I learned the materials and method from a pro staff member of a certain famous manufacturer and made it myself.

It has been opened but is unused.