Galvanized roller panel bracket assembly with 8 in. amber poly roller aids in trailering of boat without harming boat's hull. 8 In Keel Roller w/Panel Bracket | Tie Down Engineering 86280 8 in. roller size Amber polyvinyl roller 8 3/8 in. bracket width 6 in. between slots Includes bracket , keel roller , shaft and pal nuts completely assembled One piece, heavy duty hot dip galvanized 11 gauge steel to prevent rust Designed specifically to support keel rollers