Always keep extra screw and fin plate in your paddle bag for replacement. This set of Screw and 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.<br/>Features: <br />304 stainless steel construction, rust and corrosion resistant.<br />Eliminates the hassle of using a screwdriver in surfing.<br />Measure 14 * 14 * 3mm (0.55&#34; * 0.55&#34; * 0.12&#34;) for plates.<br />Fits industry-standard fin boxes.<br />A rubber O-ring to eliminate loosening while surfing.<br />A perfect and must-have replacement fit for long board surfers.<br/>Specifications:<br />Material: 304 stainless steel <br />Model: M4<br />Screw size: 4 * 30.85mm / 0.16 * 1.21in<br />Thread length: 17mm / 0.67in<br />Plate size: 14 * 14 * 3mm / 0.55 * 0.55 * 0.12in<br />Item weight: 9g / 0.3oz (One Pack) <br />Package size: 12.5 * 8 * 1cm / 4.9 * 3.1 * 0.4in<br />Package weight: 28g / 1.0oz<br/>Package List: <br />3 * Screw <br />3 * Plate