FINGER FIN SCREW (Surfboard, Paddle Board, Longboard) Hand Mounts - No Tools [2-PACK SPECIAL] Next Gen Fin Screw MOST UNIVERSAL FIN SCREW - Longer 3/4" Length fits visually ALL SUP, Surfboard, Longboard, and Inflatable SUP Fins. Screw is 10-32 X 3/4" (5mm x 19mm) long to fit thicker fin setups including Starboard & Naish. Plate is .55"x.55"x .15" (14mm x 14mm x 4mm). LONGER THAN STANDARD FIN SCREWS (3/4" 19mm) - Fits more Fins than competing, shorter Fin Screws which are 15-18mm long NO SCREWDRIVER, NO PROBLEM! HAND" Tighten for mounting & dismounting and dont worry about it rattling loose with the rubber O-RING feature. NO RUST - CORROSION RESISTANT - Stainless Steel - Wont rust in fresh or saltwater LIFETIME GUARANTEE: Theyll last foreverand if they dont somehow well replace or refund the full amount.