The Nylon and Steel Roller Wheels for Water Resistance Rower Seats package is a perfect addition to any high-quality rower's equipment. Constructed from high-quality nylon and sturdy steel, these wheels offer excellent durability and reliability in even the most challenging conditions. The nylon material is both lightweight and seamless, providing a smooth ride even under the most intense workouts. Meanwhile, the steel construction ensures maximum stability and resistance to wear and tear, even in the harshest water environments. The set comes with a pack of four, ensuring you always have a pair to hand for quick and easy maintenance. With their superior build quality and water resistance capabilities, these roller wheels are an essential investment for any rower seeking to improve their performance and longevity.