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" * 0.55" * 0.12") 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