A fine (avaerage size of 1.5mm) grey ballast that can be used as model railway ballast as well as many other uses.
Suitable for N and OO gauges.
Supplied in a 550g (approx) bag
To stick ballast down re recommend using watered down PVA glue with a small drop of washing up liquid. After laying the ballast and spraying with water from a sprayer apply the glue mix and allow to dry for a good 24 - 48 hours.