20 Pack of 1.2m Timber Railway Sleepers Pressure treatment process ensures a deep penetration of the wood preservative into the timber cells, giving these softwood sleepers an expected lifespan of around 8 to 10 years Light brown colouration initially which will fade to a honey brown and finally to a silvery grey over time when exposed to the sun Can be easily stained to suit your aesthetical requirements using a wood protective treatment, Manufacturer: Suregreen