Forty six stone masonry piers and a #82 Pier Girder. Piers are graduated in height from 1/4" to 3" by 1/4" increments with 1/8" snap-in shims provided for intermediate piers.

Approximate grades up and down in figure-8 arrangement using 18" radius curves is 2.6%. (47 piece set)

For use with Atlas Track.