316 surfboard fin screw
Stainless Steel Manual Tip Sup Center Fin Screw Plate Long board Screw And Plate Smart Screw Longboard Fin Box Screw M4*19MM
LONGBOARD SUP SLIDING FIN BOX PLATE & SCREW BOLT
Easy adjustment of fins whilst surfing, no need to carry a key. Compatible with all longboard and sup fins and boxes.