The PENN Pursuit IV Boat combos are available in 2 different versions; a 20-30 lb and a 30-50 lb version. Both combos can be used for nearly all the boat styles you can think of; the only difference is that the 30-50 lb version is more powerful, which would be the combo of choice when fishing in really deep water, using heavy baits or targeting very big fish like halibut or sharks.