"Assemblies include amber or black poly vinyl keel roller, shaft & pal nuts. Brackets are one piece, heavy-duty hot dip galvanized 11 gauge steel, specifically designed to support keel rollers. Bracket 5-3/8" with 5" roller size."
Roller Size: 5", Width Between Slots: 3", Bracket: 5-3/8", Type: Poly, Color: Black