Flexible Installation: Boat trailer kits are the industry standard 10 inch height with slots that can adjust height up to 3-3/4", making it easy to adjust height according to your needs.
Anti-Corrosion and Anti-Rust: Our roller bunk brackets are made of heavy duty galvanized steel, not easy to bend or deform, especially suitable for seawater environments.
Adjustable Angle: Bolster and swivel brackets are vertically installed on boat trailer's crossbeam, allowing the roller bunk to tilt to support pontoon, bass hunter boat, fishing boat, etc.
Upgraded Design: The U-bolts feature an extended thread design, suitable for different widths of trailer crossbeams. U-bolt measure 1/2" diameter, 3.05" wide, by 4.5" long, will fit your trailer precisely.
Complete Kit: Bolster swivel boat trailer brakcet includes 4 x Rectangular Brackets, 4 x L-shaped Plates, 4 x U-Bolts and mounting hardware.