From JS

JS TWIN FINS. Designed for maximum drive in ultra-fast boards like the Black Baron and Big Baron, this large template is meant to be ridden as a pure twin fin. Its high area overall, full tip and longer base provides incredible amounts of instant acceleration and projection down the line, while still maintaining release out of the lip and through turns.

Fin Specs

• Depth: 139.77 mm / 5.5
• Base: 113.21 mm / 4.46
• Area: 14.861 mm / 23.03