I know for a fact they aren'tI've just had a look at OPST Commando lines . . . £52.99 for a 12ft line. (13' 6" for a 5/6)
These are innovative Skagit shooting heads with an efficient, easy casting design and size ranges that are suitable for traditional Spey rod and optimised for shorter switch rods and single handed fly rods.www.anglingactive.co.uk
Any chance these guys are related to Tom Bell?