HIRST ARTS MOLD #321 - PIPE 3/8   - "Used to make 3/8" diameter pipes with 1/2" diameter flanges. Includes several pipe lengths, tank tops, ells, spacer blocks, a tee, valve assembly and 2 adapters to fit the larger pipe mold #320." Skullcrafts only uses gray Merlins Magic to produce top quality castings of Hirst Arts molds. Great care goes into each and every cast to ensure that all bricks are bubble free and all the same sizes. Alternately, you can directly buy Mold #321 from Hirst Arts to cast your own pipe 3/8 blocks and order Merlins Magic from Clint Sales and Mfg. Skullcrafts is a fully licensed legal seller of Hirst Arts casts, kits and assembled & painted pieces.