A perfect construction, modelling and carving medium. Lightweight and easily cut, filed, sanded, carved, and can be joined by use of threaded steel rods. Can be painted and decorated in almost any way. These blocks are made from autoclaved (cured) aerated concrete, are off white in colour and have extremely small, finely-dispersed air spaces. There are no fibrous particles in the ingredients nor in the final product, but it is recommended that a dust/nose mouth mask and eye protection be worn when cutting, drilling or sanding. Please note this item has an additional freight charge.