4.6" Twin Keels - Futures compatible midnight purple Pro Glass (2 fins)

Midnight-purple Pro Glass keel fins delivering powerful drive, speed and dependable control.

These keel fins combine traditional twin-fin drive and flow with the control and stability needed for confident high-speed surfing.

• Choose these fins when: You want strong down-the-line drive, secure hold and smooth, flowing turns.

• Best suited to: Fish surfboards, wide-tail twins and boards designed for a large twin-keel template.

• Performance feel: Fast, powerful and controlled, with smooth release through turns.

• Wave range: Well suited to small-to-medium waves, clean open faces and long running sections.

• Construction: Solid Pro Glass fibreglass with a precision-machined finish.

• Compatibility: Futures-compatible single-tab fin boxes.

• Included: One matched set of two Eveley fins.

The broad 6.2-inch base generates powerful projection and helps the board maintain speed through weaker sections. A swept keel outline provides dependable hold while supporting the long, flowing turns traditionally associated with twin-keel surfboard fins.

Solid Pro Glass construction produces a stiff, predictable flex that remains stable under pressure. The flat inner foil encourages fast acceleration and responsive water release, creating a balanced combination of drive, control and freedom.

Technical Specs

• Fin type: Twin keel surfboard-fin set

• Quantity: Two fins

• Fin depth: 4.6 inches

• Base width: 6.2 inches

• Tab depth: ¾ inch

• Foil: Flat inner face

• Template: Broad-base, swept twin keel

• Material: Solid Pro Glass performance fibreglass

• Finish: Precision-machined finish

• Colour: Midnight purple

• Fin system: Futures compatible

• Recommended setup: Two-fin fish and twin-fin surfboards fitted with compatible Futures-style boxes

• Performance: Strong drive, high-speed stability, secure hold and smooth release

• Dispatch: Stock held and dispatched from Sydney

• Australian delivery: Free tracked delivery with transit insurance

• Express delivery: Available for $10 per order at checkout

• Returns: 30-day returns on unused, full-price products

Compatibility notice: Check your surfboard’s fin-box system before ordering. These Futures-compatible keel fins do not fit FCS or FCS II fin boxes.

Futures™ is a registered trademark of Futures Fins. Eveley Surf is not affiliated with or endorsed by Futures Fins. All compatibility references to Futures Fins are for descriptive purposes only.

Eveley Surfboard Fin Knowledge Hub

Learn more about choosing and understanding keel fins and other surfboard fins:

• Twin Keel Surfboard Fins Guide – Speed, Drive and Classic Flow

• Twin Fin Surfing Guide – Speed, Flow, Keels and Modern Control

• Futures Compatible Surfboard Fins Explained

• Surfboard Fin Materials Guide – Fibreglass, Honeycomb and Carbon

• Surfboard Fins Australia – Complete Buyer’s Guide