<https://www.offgridsports.com/shop/accessories/off-grid-30mm-trident-g10-kiteboard-fins-set-of-2/#product>
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"Our 30mm Trident fin offers less grip but more planing than our 45mm Hype Fin. This fin gives more margin for error when landing and is ideally suited to those using wakestyle boards or who prefer to do wakestyle tricks. Suitable for wakeboards.\r\nIncludes M6x20mm A4 316 stainless steel bolts and plastic washers.\r\nFeatures:\r\n\r\n \tSet of two fins\r\n \tSymmetrical fin profile\r\n \tManufactured from G10\r\n \tDimensions : 30mm x 150mm (height x length)\r\n \t38mm hole pattern spacing\r\n \tUniversal fit on all Off Grid boards and other major brands"
<https://www.offgridsports.com/shop/accessories/off-grid-30mm-trident-g10-kiteboard-fins-set-of-2/>