Made of acetal plastic resin for strength and lightness the FinjakTool-Free can be recyled at the end of it's life. Unlike a fin bolt and plate FinjakTool-Free is a 'one-piece clamp' which is both easier to locate in your finbox and also less likely to be lost. FinjakTool-Free will not rust or sieze and will not damage your fin like a traditional bolt can.
The FinjakTool-Free was intially designed with rear-tab fins in mind. For front-tabbed fins the FinjakTool-Free comes with an inherent safetly feature. If you hit something in the water it may release. This reduces impact damage to both fin and fin box and potentially expensive repairs to your surfboard. Should you hit something with your board or fin it's good practice to check the security of your fin regardless of using a front or rear tabbed fins.
*We're confident that this fits "most" fins into "most" boxes. Please check both fin and Finjak are secure in the board before using. Any issues let us know.