10-3/8" W Black Rubber Keel Roller Panel Bracket Assembly (86432) by Tie Down Engineering®. Brackets are one-piece assemblies which include keel roller, shaft and cap nuts. 11 gauge steel is hot dip galvanized for extra protection, specifically designed to use with keel rollers. This superior product is perfect to make your trailer towing experience safe and convenient. Designed to meet the highest quality standards, it is second to none in durability and performance. Made using the finest materials, it is sure to serve you reliably for a long time.