The recessed deck fittings require a odd egg-shaped hole cut in the deck of your kayak. This precision hole is accomplish by a plunge router with pattern bushing in this template. The template is secured to the deck, you follow the template, you get an egg-shaped hole.
The template is made from 1/2" MDF. It is designed to be used with a 1/8" diameter down-cut router bit and a 3/8" diameter pattern bushing. We do not sell these, they are available through Amazon and other router bit suppliers.