Toggle Bolts for attaching items to your boat and kayak – STABLE KAYAKS AND MICROSKIFFS MADE BY WAVEWALK
Amazon.com: TOGGLER SNAPTOGGLE Drywall Anchor with Included Bolts for 1/4-20 Fastener Size; Holds up to 265 pounds Each in 1/2-in Drywall by TOGGLER (20 Pack) : Industrial & Scientific