We offer Scientific Anglers backing & some Cortland backing cut to any length desired (in full yards) up to 1500 yards. Buying in bulk saves us, and you money. But please be aware that you will receive the backing on a spare line cassette. We use only locking cassettes, so there is no worrying about tangles and knots. If you purchase backing with a reel or spool, simply specify left or right hand retrieve, and we will spool the backing for you if possible.