Penn U.S. Senator 425/50 Wide Spool Mono Sheild have a fully machined aluminum frame to keep internal parts in perfect alignment. The gear train reels come in a massive stainless steel main gear and a heat treated pinion gear, it is built to stand up to anything, including commercial use. HT-100 carbon fiber drag washers 6 shielded ball bearings Line Capacity Rings Reversible Harness Lugs.