Surfboards 3 Surfboard Longboard Sliding Fin Screw Fin Plate Replacement Kit for Stand Up Paddle Body BoardAlways keep extra screw and fin plate in your paddle bag for replacement. This set of Screw Fin Plate is a universal fit for most fin box on the market and need no screwdriver to install it. Say goodbye to your screwdriver It is designed to move a fin back or forward, install fins in a perfect position. Features: 304 stainless steel construction, rust and corrosion resistant. Eliminates the hassle of using a screwdriver in surfing. Measure 14 * 14 * 3mm (0.55?* 0.55?* 0.12? for plates. Fits industry-standard fin boxes. A rubber O-ring to eliminate loosening while surfing. A perfect and must-have replacement fit for long board surfers. Specifications: Material: 304 stainless steel Model: M4 Screw size: 4 * 30.85mm / 0.16 * 1.21in Thread length: 17mm / 0.67in Plate size: 14 * 14 * 3mm / 0.55 * 0.55 * 0.12in Item weight: 9g / 0.3oz (One Pack) Package size: 12.5 * 8 * 1cm / 4.9 * 3.1 * 0.4in Package weight: 28g / 1.0oz Package List: 3 * Screw 3 *Plate