Quick view Casting Trees Cast bronze model pipe fitting trees. For those wishing to make their own fittings. Cut them off, drill, and thread to suit. May also be soldered. Sizes available for use with the following pipe: 3/16" O.D. pipe (3/16-40 thread) 1/4" O.D. pipe (1/4-40... MSRP: Was: Now: $7.00 - $16.00 Choose Options