Linghunt - Adapter - B2333-2 3/8"-24 FEMALE x 7mm-1 MALE

Price : $24.50

This diameter adapter was designed to Mount the various OMER multi prong spear tips on common 6mm Pole spears.

Stainless Steel Construction. 3/8"-24 Female x 7mm-1 Male
Note the extended shoulder below the 7mm thread to provide support into the Plastic OMER housing.
The picture of the OMER tip is for illustration ONLY. You will need to buy the tip from a different vendor.
Beuchat and a few others make a similar tip. I don't know if this will fit them properly.