Thank you for viewing! ★ Anonymous delivery! ★ New, free shipping! ★ Ships within 48 hours! This is a 9-inch center fin. The center fin plays a role in ensuring the board's stability and straight-line tracking. ★ Recommended points ★ 1. Improved straight-line tracking It helps the board go straight on the wave, preventing the board from wobbling or drifting, especially when surfing waves at high speeds. 2. Turn balance It works with the side fins during turns to maintain balance when making curves and changing direction. Having a center fin provides stability even during sharp turns. 3. Stability This is an essential item for beginners, intermediate surfers, and those who use longboards. It reduces instability on the wave and makes control easier. Please consider it. ★ Important notes ★ ※ Because it is an imported product, there may be some rough sewing. ※ The product may have been opened once for inspection. ※ To keep the price down, we will ship with simple packaging. ※ The color may look different depending on your monitor. ※ It may be folded for shipping. There may be creases. ※ There may be tears, crushing, dirt, printing misalignment, folds, or weak adhesion of stickers or masking tape on the box or case.