HSI Yamaha OEM Electrical Box Mount Kit.
No more having to drill holes in your nice carbon fiber ski for the e-box to mount. These carbon bases allow the bolt to act as a stud with no drilling required.
Includes 2x Carbon Fiber Disc Bases, 2x stainless Countersunk bolts, and 4x stainless nuts and washers. Carbon base is 4mm thick.
Note - Rough up hull surface before gluing and use a STRONG epoxy or plexus