FliteLab Fuselage Crafted from high grade carbon fiber for optimal weight, strength and stiffness. These fuses connect with two bolts via a titanium conical interface for peak hydrodynamic performance and durability. What's Included: Fuse 4 x M6 16mm 316 bolts Set of shims Fuse cover Key Features: Crafted from high grade carbon fiber for optimal weight, strength and stiffness. These fuses connect with two bolts via a titanium conical interface for peak hydrodynamic performance and durability. FUSE_S: Enhanced pump rate, with a tighter turning radius and snappier feel. A great all-rounder or for use in smaller waves. FUSE_M: Enhanced pitch stability for drawn out turns. A great all-rounder or for use in bigger waves. FUSE_L: Enhanced pitch stability for high speeds when towing or wing foiling.