Ujjdwiurgh 20 Pcs Tri-Grip Rivet with 20 O Rings Long Grip Tri-Fold Tri Bulb for Deep Water Installing Kayak, Canoe and Boat

Aluminum body with aluminum mandrel, all aluminum No plastic; - and good stress makes you convenient and save times, A rivet tool is required for installation ( Tool not included) Tri-Grip rivet style, Back side spread out in 3 directions to hold the materials together and make them strong enough for mounting accessories such as a rod holder Package includes 20 pcs rivet kits and 20 pcs water proof O-rings, it makes the rivets in the deep water when use with the O-Rings Size of hole is 5mm, head of rivets is about 10mm, black part is 2.5cm, Detail measurement look for the 3th picture These kayak rivets widely used in shipbuilding, containers, industries aviation, automobiles, furniture appliances and more; they work great on many applications on kayak like as handles, pad eyes, rod holders, etc.