ALPS 50lb. roller tip tops are the next step in needing medium to heavy duty application fishing Tip Tops. The frames are Precision CNC machined from 6061 T-6 billet aluminum which makes them unrivaled in strength as well as extremely corrosion resistant. All other critical parts are SS316 Stainless steel, including the screws, axle pin, and rollers, providing excellent corrosion resistance to add to the quality. Each axle pin has a custom Teflon bushing to reduce friction and allow superb roller performance.