Bulk parts for gear rigging on your kayak or canoe. Tri-grip rivets are the strongest rivets for mounting on a kayak due to the back of the rivet flaring into legs as pressure is applied during the installation process. The Yak Gear Tri Grip Rivet comes with a rubber gasket to create a waterproof seal upon installation. Rivet tool required for installation.|Bolts are made from 304 stainless steel. Stainless steel does not corrode, rust or stain with water as ordinary steel does.