Flexible Width Adjustment: Designed with adjustable width, this roller boat trailer guide expands up to 11.8 inches / 300mm, making it ideal for ski boats, sailboats, and fishing boats. The guide keeps the boat aligned, ensuring smooth, secure loading. Easy, Sturdy Setup: This boat guide rail is equipped with U-bolts that fit trailer beams up to 3.1 inches / 78.74mm wide, with two adjustable mounting methods. Made from reinforced M8-grade steel, it remains sturdy and unbent even during bumpy rides, providing long-lasting performance. Complete Boat Shielding: Our trailer guide pole is designed with Pvc padding at key contact points to offer complete protection for your boat. It prevents scratches and absorbs shocks, safeguarding against dents and deformation during transport and loading. Sturdy Steel Design: Crafted with thick steel material, Vevor boat trailer guide offers exceptional durability and resistance to deformation. Even after impact, the sturdy frame remains intact, ensuring your guide pole lasts for years without losing its shape. Enhanced Visibility Design: With high Pvc posts, this boat guides for trailer improve visibility, making it easy for drivers to track trailer status. The design also serves as a clear warning to approaching vehicles, ensuring better awareness and reducing risks during transportation