Upgraded to a one part fly line ( the welds gone!!) our big game version of the Depthfinder is built on a 50lb test Power core for maximum strength. The high density tungsten coated head gets your f1ies deep, while the low stretch allows you to set oversize hooks with ease, even at extreme range. It's extra long 150' length allows you to exert full pressure earlier in the fight - helping tip balance in your favor for a change. Big fish require 'BIG' fly lines, our Big Game version of the Depthfinder combines a 50lb test braided Power Core with the highest density heads on the marker. It's extra long 150' length allows you to exert full pressure earlier on in the fight - helping tip the balance in your favor.