This Carbiepoles™ Mounting Platform Spacer is an accompanying piece for the Carbiepoles™ Separating Mounting Base for boats. This spacer attaches to your boat via five small holes and prevents you from having to drill a larger hole into your boat's fiberglass to accommodate the spring-loaded button on the mounting base. Using this spacer allows you to drill smaller and fewer holes into your boat when installing the Carbiepoles system.