By replacing the Joiner of FineTrack rail products with this resin-made gap joiner, a gap can be created in that part. Feature ? By replacing with a fine track joiner, a gap can be provided in the joiner part. ? A two-color set of gray that is not conspicuous so as not to impair the realism, and black that is conspicuous so that the position of the gap is easy to understand. proper use is possible ? plastic made exchange jig attached to the runner Product content ? Gap Joiner Ash Runner ? Gap Joiner Black Runner