Daiwa Sensor Monofilament 300m 12lb has a reputation for exceptional reliability & a rugged performance._ Sensor has delivered amazing durability, suppleness, consistent diameter & superb knotting & is probably the most popular mainline in the UK today._ Can be used as mainline or hooklength material for specialist fishing._ (Please note image shows 12lb, see below for correct breaking strain.)_BS 12lb. Spool size 300m. Diameter 0.33mm._