Realistic, Just Like Real Track Ballast! PROFI Ballast and Track Ballast Ballast and stones play a very important role in the realistic design of model landscapes. Track ballast is usually mined regionally and therefore reflects the colour of the rocks and stones in that region. With the new types of PROFI Ballast by NOCH, you can, among other things, ballast your track beds extremely realistically. PROFI Ballast is available in four different colour hues and two different grain sizes for H0, TT, N and Z gauges. The types look great when mixed with each other. This creates completely new, custom colours. The grain size of the Track Ballast is 0.5–1.0 mm.