Basically, it is small lead shot.
You can use it to as ballast, filling spaces in wagons. Also, it can be used in a bag as a weight that takes the shape of irregular items. Use to help press down awkwardly-shaped items when gluing.
You can use it to as ballast, filling spaces in wagons. Also, it can be used in a bag as a weight that takes the shape of irregular items. Use to help press down awkwardly-shaped items when gluing.