For 20 To 80-lb. Trolling And Stand-Up Tuna Rods Aftco's Heavy Duty (HD) roller guides, with ample room for heavy lines and large knots, are ideal for big game trolling and deep water rods rated for 20 to 80 lb. lines, and for stand-up style tuna rods up to a 130 lb. test rating. Each features Aftcote high performance bearings. Standard roller tip-tops are the perfect match for this guide series.