Die-matic Boat Trailer Guide On, Set/2 (Galvanized) Die-Matic Tool, Manufacturing Quality Boat Trailer Parts at the lowest Prices for over 30 years! 2 ea. Main Tube w/Welded on Tabs (14 gauge Steel) 2 ea. Extruded Rollers (2" dia.) 2 ea. Main Formed Support Brackets, 4 ea. 4-Hole Plates All Mounting Hardware included