First Level Base Kit - 3rd & 4th Radius 'OO' Gauge
This kit gives you your first complete turn on your double-track helix (from baseboard to level one) it rises to 76mm, resulting in a gentle approximate 1:50 gradient. Designed to suit 3rd & 4th radius set track Geometry. The kit is supplied with everything required to give you a full 360° turn including comprehensive assembly instructions.
Any additional level will require the 3rd & 4th radius OO gauge riser kit.