These high-quality brass inserts (barrel nuts) come in 2 sizes and can be used to replace any that have worn out or become cross-threaded in a range of windsurfing fins.
**Please check the diameter carefully required before buying**
Sizes
SMALL - 10mm diameter - M6 thread
LARGE - 12mm diameter - M6 thread
Compatibility suggestions
SMALL - Powerboat & F-HOT Tuttle/Deep Tuttle Box fins
LARGE - Most Tuttle/Deep Tuttle Box fins, including Starboard
(barrel nuts may differ between fins, brands and years).
**Please check the diameter carefully required before buying**
