Linghunt - Adapter - B2409-2 3/8"-24 Male x 7mm-1 Female

Stainless Steel Adapter: [ 1/2" OD, 3/8"-24 MALE x 7mm-1 FEMALE ]

Check Out

Price : $17.70

The 1/2" diameter adapters are typically used on pole spears and other manufacturer spear tips.
3/8"-24 Male
7mm-1 Female
Stainless Steel Round Bar, Flats for 7/16" Wrench
Can be used for other application as well