The NRS Fin Replacement Plate holds the fins (also called skegs) used on NRS inflatable SUP boards and the NRS Pike Fishing IK. Plate Only, fin sold separately. 
Easily attaches to your inflatable SUP board or NRS Pike with Stabond Adhesive
To attach this plate to a rigid fiberglass, composite or plastic board or boat, use G/flex Epoxy Adhesive
Apply adhesive to entire underside of the plate, following the application instructions for the adhesive.
The Replacement Plate accepts our 2", 5" and 9" fins
Internal length of the slot the fin slides into is 7 1/2" (19 cm) and the width is 1 3/8" (3.5 cm).
On top of the plate, the distance from the open end of the fin slot to the center of the groove that the locking tab slides across is 5 1/2" (14 cm). The width of that groove is 5/8" (1.6 cm).
Overall footprint is 5.5" (14 cm) x 10.5" (26.7 cm).