BrassCraft 1/4-in x 1/4-in Compression Reducing Union Coupling Fitting in the Brass Fittings department at Lowes.com
12mm & G3/8'' Brass Swivel Joint Compression Fitting with Male Threads 75 bar Zinc plated Steel/NBR DIN EN 1254-2 | Tameson.com
Copper Compression Coupling - 3/4" - - Backflow Parts USA
Advantages of Compression Fittings - Flowflex
1 Set (2 Pieces) of Comfort Logafix Compression Fitting KLV 15 for Euro Cone 3/4 inch x 15mm Copper Pipe, mild Steel and Carbon Steel Pipe - Amazon.com
How to install a COMPRESSION fitting! | GOT2LEARN - YouTube
LTWFITTING 7/8 in. O.D. Brass Compression Coupling Fitting (10-Pack) HF621410 - The Home Depot