Wonderbolt Fin Screw

The single fin box needs one screw and one plate, and it is always the screw that goes missing. This one tightens by thumb.

Block Surf's Wonderbolt is a tool-less stainless steel fin screw with a square plate and a rubber O-ring that keeps it from backing out. Built for standard US single fin boxes.

Details

• 100% stainless steel bolt and plate, rubber O-ring
• Tool-less EZ-Thumb design
• Screw: 10-32 thread x 3/4" length
• Plate: 1/2" x 1/2" x 0.15"
• Fits standard US single fin box
• One size