Matt 'Mayhem' Biolos's 'MB' shaper fin. High area specialty quad set adds bite and control.
- Specialty split keel quad fin set.
- High area quad keel set adds bite and control to hybrid boards with wide tails, without sacrificing pivoting capabilities.
- Designed to fit the FCS II Fin System.
- Recommended for all board types including modern fish and hybrid models with moderate-to-low rocker.