To keep your boat running smoothly and efficiently all season long, we provide a wide range of boating accessories. Browse from the wide range of products and choose the right boat accessories depending on your needs, preferences and budget. Features High-strength aluminum seat mount Mounts to deck Heavy-duty springs provide a comfortable ride Rust-resistance Heavy-duty springs Heavy-Duty Springs Provide A Comfortable Ride Specifications Size: 7 x 8.5 in.