Gloss gray countersunk M6 wingnut set

Hydrofoil wingnut set...designed for easy adjustment in the water without the use of any tools.  One set of 4 wingnuts for use with WizardHat universal foil mounting hardware.  Use in place of their M6 hex nuts for mast plates with countersunk screw holes.  Machined 6061 aluminum, gloss gray anodized finish with stainless steel helicoil insert for added durability and strength. 
 
Do not use any tools...finger tight only.  Do not expect the wingnuts to align with your mast. Please see our FAQ for more information.