Paddle Board Fin, 9" SUP Fin Replacement Compatible with ROC, Nylon Single Center Fin, No-Tool Install for Inflatable SUP, Surfboard & Longboard

This 9-inch replacement fin fits ROC inflatable SUP quick clip fin boxes, an affordable spare to replace cracked, broken or lost original fins. Crafted from one-piece PA66 reinforced nylon, it resists abrasion and rock impact, stable for long-term fresh and mild saltwater use without sun brittling. Tool-free slide lock enables quick install and removal for easy board folding & storage. Wide optimized base delivers steady tracking to reduce drifting during lake trips, yoga and coastal paddling. Built-in retention lanyard holds the fin securely if the lock loosens in water.

• Precise Compatible with ROC Inflatable SUP Quick Clip Fin Box: This 9-inch center replacement fin exactly matches the original slide-in fin slot of ROC inflatable paddle board models. It serves as an affordable direct replacement for cracked, broken or lost factory original fins, and is an essential spare backup accessory for all your paddling trips.
• Heavy-Duty PA66 Reinforced Nylon One-Piece Molding: Marked with high-performance PA66 recycled nylon on the fin surface, this one-piece molded fin balances rigidity and flexibility. It resists cracks and deformation when colliding with lake rocks, shallow sandbars or underwater obstacles. Abrasion and salt-resistant construction stands up to long-term use in both freshwater and mild saltwater without turning brittle under sun exposure.
• Tool-Free Slide Lock Design with Loss Prevention Lanyard: No screwdriver or extra hardware required. The slide-in locking tab allows full installation and removal in seconds for easy board folding and storage. Built-in connecting lanyard links the lock tab and fin body together; even if the lock loosens accidentally on water, the fin won’t drift away and get lost.
• 9 Inch Optimized Profile for Stable Flat-Water Tracking: Designed with a standard 9in height and wide base, this center fin delivers reliable lateral stability to reduce board side drift during lake cruising, SUP yoga and casual light surfing. Compared with smaller fins, it provides straighter tracking; unlike oversized fins, it keeps agile turning performance for all skill levels. Always secure the lock tab and lanyard before paddling.
• Multi-Scene Replacement Fin Tailored for ROC SUP: Tailored for mainstream usage scenarios of ROC inflatable paddle boards, including lake leisure paddling, SUP yoga, short-distance fishing and calm coastal outings, delivering steady stabilizing performance for all your water trips.