These are Grade B softwood reclaimed sleepers. They are fantastic for creating a rustic look in your garden. They do have slightly waney edges and may be a little damaged. They are treated with creosote and tar and should therefore not be used in high contact areas. If in direct sunlight the creosote and tar may ooze and leave a distinct smell.
These sleepers are ideal for stacking or building retaining walls. They do vary in size: