6.5" International 4A Center Fin in midnight purple Pro Glass.

High-performance surfboard fin crafted from midnight purple Pro Glass for ultimate 4A template firm flex and precision.

• Best For: Mid-lengths, 2+1 setups, and performance longboards.

• Feel: Firm flex.

• Conditions: All-round versatility from waist-high peelers to overhead carves.

• Compatibility: Standard Center Sliding Fin Box. (US / Bahne box)

• Placement: Center fin box. Move it forward for a looser feel, or back for more stability.

  Specs

  Height (Depth) 6.5: Base 4.9” ‍ ‍ Foil 50/50

• Eveley Surfboard Fin Knowledge Hub

  Navigating the world of surfboard hardware can be complex. To ensure you’re getting the most out of your setup, check out our comprehensive Surfboard Fins Australia – Complete Buyer’s Guide to learn about foil types, cant, and rake. Understanding how surfboard fins affect your hydrodynamics is the fastest way to level up your surfing.

  Delve deeper:

• Single Surfboard Fins: How Single Fin Surfing Changes Speed, Flow & Control‍ ‍

• Single Fin vs 2+1 Longboard Setup — Which Should You Choose?

• Surfboard Fin Materials Guide – Fiberglass vs Honeycomb vs Carbon Surfboard Fins

• Sliding Center Fin Box Explained (US / Bahne box)