Need help.. can't figure out what the right fitting it is to attach to water supply line for refrigerator ice maker.. I lost the nipple/coupling in the first pic.. I tried fitting

INSTALLING ICE MAKER / REFRIGERATOR WATER LINE - using 1/4 compression hose

How to install a refrigerator with ice and water dispensers

Pack of five 1/4” OD x 1/4” OD tube fittings Safe to use on copper or plastic water line tubing Hex head on both sides of adapter provide excellent

Ice Maker Water Line Brass Compression Tube Fitting, 1/4” OD x 1/4” OD (5)

The high-quality Extra Output Tool Kit includes everything you will need to connect a secondary output and drinking water filter such as a reverse

Ice Maker Water Line Kit Shut-Off Valve, 25 ft. Food Grade 1/4 in. Tubing Secure Locking Clips

Ice Maker Water Line Brass Tube Fitting, 3/8 Male x 1/4 Compression - (2 Pack) : Industrial & Scientific

Tapping water heater supply for fridge connection? - Community Forums

PureSec IMK01 Ice Maker Water Line Kit 3/8&1/4 Fridge Water Line Connection DIY Kit for Connecting Reverse Osmosis Water Filtration System to Refrigerator/Ice Maker

How To Connect A Water Line To Your Refrigerator (+Tips & Tricks)

Refrigerator and Ice Maker Water Line Hookup Kit - PureWater Filters

Water Line to the Fridge: Refrigerator Ice Maker and Water Supply

Precise Sizing: To ensure the right fit, please measure your tubing correctly. The outer diameter of the copper or plastic tubing connected to 1/4

Brass Water Line Adapter Splitter for Refrigerator, Ice Maker Fridge Supply Line Tee Valve with 1/4 Compression Fitting(1/4-3/8-3/8, 2 PCS)

Fridge Water Line Kit Connector - Refrigerator Ice Maker Water Line Splitter, Also Available for Ice Maker Outlet Box, Drinking Water Faucet, Water Filtration System(1/4-3/8-3/8)

How to Connect an Ice Maker Like a Pro

How To Connect a Water Line To Your Refrigerator Ice Maker - Reverse Osmosis or Standard Hookup