This Ronseal Multi-Purpose Wood Treatment has the following specification: Colour: Clear Size: 2.5 litre Ronseal Multi-Purpose Wood Treatment protects all interior and exterior wood against rot and insect attacks. It penetrates deep into the wood to prevent future infestations from woodworm and other insects. It can be sprayed on, making application quick and easy. It can also be painted over with paint, stain, oil or varnish.