The 15″ size holds up to a 24′ low profile watercraft. These are for low profile boats, Jet skis etc.
The 18 3/4″ size holds up to a 32′ watercraft. Recommended for watercraft with Towers!
The 22 1/2″ size holds up to a 42′ watercraft.
Sandspikes® are lightweight anodized aluminum, will never rust, and will last a lifetime. They work on all types of beaches!