3/16" Long Grip Tri-Grip Kayak Rivets Tri-Fold Tri Bulb Mounting Rivet with Waterproof O Rings for Deep Water Installing Kayak Canoe and Boat Accessories, 20 Pcs Item Description ?Package included?: 20 Pcs kayak rivet for kayak and 20 pcs water proof rubber O-rings that makes the rivets durable in the deep water when use with the water proof rubber rings ?Fit Size?: 3/16" hole size, head of rivets is about 3/8", black part is 1", Grip range is 1/6" - 1/2" (4MM-12MM). Rivet tool required for installation (tool not included) ?Great Material?: The Tri-grip rivet is Aluminum body with aluminum mandrel, all aluminum No plastic, and water proof rubber O-rings, durable, corrosion-resistant and good stress for long time use ?Strong Holding Power?: Back Side splits in three directions for hold the materials together to make them strong enough ?Multi-Functions?:These rivets kit will work great on almost any application on kayak like rod holders, pad eyes, terminal ends, handles, etc. And shipbuilding, containers, industries construction, automobiles, furniture appliances and more ? See more product details *Material: All aluminum no plastic. aluminum body with aluminum mandrel, water proof rubber O-rings *Provide a way to join parts together when you don't have access to both sides *Style: Tri-Grip rivets. Back Side splits in three directions for superior holding power These rivets will work great on almost any application on kayak like rod holders, pad eyes, terminal ends, handles, kayak seat attach point etc *Work great on almost any application on kayak like rod holders, pad eyes, terminal ends, handles, etc. *Widely used in construction, automobile, ship, kayak, boat, machinery, electric equipment, furniture, etc Payment We accept payment only through PAYPAL Shipping We ship products worldwide through standard express courier service, it will reach within 7 to 10 days to abroad buyers, we ship the product after recieved clear payment and give full information about shipment to the buyer Return We accept product return 25 days from delivery date but product should be in original condition.