HIRST ARTS MOLD #273 - PIPELINE FLOOR   - "These 1" square tiles can be used for service areas and engine room floors. Includes pipeline and diamond plate floor tiles." 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 #273 from Hirst Arts to cast your own pipeline floor 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.