If you're looking for copper tubing fittings then Amazon has a nice selection. For home improvements and plumbing fittings the copper tubing fittings are available in a variety of styles, sizes and designs by various brands. Some styles include the copper outside tube brush, fitting brush, copper flexible connectors, coupling, copper threaded tail piece, fitting end plug, copper elbow or the copper air chamber to name a few. The copper tubing fittings and all copper supplies are useful for multiple home projects. D.O. Smith 34217 1" Outside tube brush 1" copper tube
D.O. Smith 34217 1" Outside tube brush 1" copper tubeFitting BrushesOutsideD.O. Smith 34217 1" Outside tube brush 1" copper tube 
Elkhart Prod. Corp. 30638 Tube Cap
Fits over O.D. of tubing. Sweat solder fitting. No. 30622: 1 4" nominal copper fitting No. 30624: 3 8" nominal copper fitting No. 30626: 1 2" nominal copper fitting No. 30630: 3 4" nominal copper fitting No. 30632: 1" nominal copper fitting No. 30634: 1 1
 the copper tubing fittings are found at amazon.com
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