Tie Down Engineering Galvanized Steel Panel Bracket Assembly 

"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 8-3/8" with 8" roller size."

Roller Size: 8", Width Between Slots: 6", Bracket: 8-3/8", Type: Poly, Color: Black