RIO ELITE “SWITCH CHUCKER” Fly Line with WELDED LOOP INSTALLED. A very easy casting, extremely powerful line with a short head designed to cast indicators, sink tips and large flies. It is the best choice of Switch line for fishing at close quarters and for any Switch rod user who wants the casting to be as easy as possible. 100-ft line. Green/Orange running line with Gray head. 4F thru 9F.