2 Pcs G3/4 x G3/4 Pipe Fitting, Brass Hex Nipple Connector, Hex Nipple Connector, Male to Male Straight Thread Pipe Fitting, Solid Brass Double Nipple for Plumbing, Heating, HVAC, Gas Pipe Connections

Flomasta Hexagon Nipple 3/4" x 3/4" - Screwfix

ERGAOBOY 2 Pcs 3/4" Male to 3/4" Male BSP Thread 304 Stainless Steel Hex Nipple Pipe Fittings, Straight Connector Adapter Fitting