EASTMAN 1/4-in Compression x 1/4-in Compression Brass Multi Turn Saddle valve in the Shut-Off Valves department at Lowes.com
Self-Piercing Saddle Valve (Feed Water)-SP04
Saddle valve on water line to ice maker on fridge. DIY by my dad 40 some years ago? Can't seem to get valve closed… don't want to break and cause a mess.
Anderson Metals Nonself-Piercing Saddle Valve, 1/4 In 4GU26 | Zoro