Elevate your boat trailer's performance with the Keel Roller 114mm featuring a 17mm Bore in a striking blue color. Specially designed to provide optimum support and smooth keel guidance during boat launch, retrieval, and transport, this roller is a reliable choice for boat owners. With a diameter of 114mm and a 17mm bore, this keel roller is suitable for a range of boat sizes, ensuring versatility and functionality. The vibrant blue finish not only adds a touch of style to your trailer but also enhances visibility, making it easier to align your boat properly. Constructed with durability in mind, the Keel Roller 114mm with a 17mm Bore (Blue) is resistant to corrosion, ensuring longevity even in marine environments. Easy to install and built to withstand the rigors of regular use, this roller is a practical and attractive addition to your boat trailer. 4 1/2in Keel Roller Blue with 17mm Bore Viking Rollers 91312