sleepers and big blocks are very popular item we ship regularly to our partners in Pakistani and Indian markets. They are pine Anti-stain treated , square edged , no rot, no bark , and in principle no dead knots.
one must expect a few dead knots in the big 250X250mm & 300X300mm sleepers as these are 120 year old logs!
Typical sizes are :
150X200/225/250/275/300mm X 4 /5 / 6m
175X200/225/250/275/300mm X 4 / 5 /6m
200X200/225/250/275/300mm X 4 / 5 / 6m
225/250/275/300X 200/225/275/300 X 4 / 5 / 6m (big blocks)