Horiznext npt 1/2-3/4 male to female thread reducer adapter, stainless steel connector for plumbing,shower hose, sink faucet, tub, air water gas line(2 pcs) - - Amazon.com
1/2pcs Shower Hose / Head Adaptor 3/4" X 1/2" Bsp Female X Male Chrome Reducer Bathroom Faucet Adapter Pipe Fittings - Pipe Fittings - AliExpress
3/4" - 1/2" Chrome Shower Hose Adapter Bush Reducer 25mm - 21mm Old - New BSMR | eBay
Island Water World | Hose Adapter For Shower Hose 3/8" To 1/2"
Glacier Bay Pfister Shower Arm Adapter 3075-538 - The Home Depot
Brass Pipe Fitting,Adapter 3/4”GHT Female Thread (Swivel) x 1/2” NPT Male Threaded Connector,Garden Hose Connector, Garden Hose to Shower adapter,Chrome (3/4GHT female X 1/2NPT male) - - Amazon.com
1/2" IPS x 3/8" IPS SHOWER HOSE ADAPTER BUSHING FOR BATHTUB DIVERTER F - K & B Distributors. Inc.
3/4 Inch BSP Female x 1/2 Inch BSP Male Shower Hose Reducer / Head Adapter 5060639380282 | eBay
Chrome Clawfoot Tub Add-A-Shower Bathcock Diverter Faucet With Shower - K & B Distributors. Inc.
G-Promise All Metal 3 Way Diverter | Hose Fitting Tee | T Shape Adapter Connector for Angle Valve Hose | Bath Shower Arm | (Chrome) - - Amazon.com
Personal Shower Hose Connector, Male Shower Hose 9326423708 | eBay