ITEM NAME:6Pcs Surfing Fins Clip Tracking Lock Fin Buckle Water Sports Accessaries img *{margin:0;padding:0;.Suitable for most of the Fins. Used to lock the fin after we insert it into the base to stop it from falling off. 6 Piece Surfboard Fin Clip. SKU: FUZ0016354219515783. Color may be slightly different since different monitor.