External Solvent Trap Booster / Disconnector 1/2-28 Threaded Connector With 1/2-28 Piston
Other 3 options are available:
.578-28 Male to 9/16-24 Female
.578-28 Male to .578-28 Female
1/2-28 Male to 13.5x1LH Female
No FFL or Tax Stamp Is Required For This Item.