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Included with each kit are both straight and curved blocks in a variety of radii. Each block represents a 1 inch arc length of tubing. Blocks of different sizes can also be connected to simulate stepped headers. Each block is molded with a series of markings and index points to make the transition to metal as easy as possible.
See the Includes tab for details of specific components of this kit. Additional blocks in each radius are available under the Accessories tab.