The XPLA II is our updated version of the older XPLA. The disc drag works on a cork disk with a one way bearing and a rear adjusting drag knob. It is CNC machine cut from premium grab aluminum with a large arbor spool and simple round porting design to reduce the overall weight. The XPLA II is available in 2/3wt, 4/5wt, 5/7wt and 9/10wt. Spare spools are available in all models.