This is the adapter for the hose to attach to your DBV EOK Dab Dish. You will also use a 10mm Sick Clip to secure this adapter to the Dab Dish.
You will hook your hose up to this adapter and then attach the hose and adapter to your DBV EOK Dab Dish. Do this while your unit it turned off to avoid any burns or electrical shorts.
It's fine craftsmanship, does what you need it too and doesn't bind like other adaptors did.
Awesome piece that functions really well!