ITEM NAME:2 Set Longboard Fin Screw and Plate - Paddleboard Surfing Water Sports img *{margin:0;padding:0;.A rubber O-ring to eliminate loosening while surfing. Fits all standard fin boxes in the market. No Tool Required: Hand tighten against rubber o-ring, easy to install in seconds. Color: Silver. Due to the difference between different monitors, the picture may not reflect the actual color of the item.