1??[ What You Get ]: 50 x silver aluminum tri rivets. The diameter is 3/16 Inch / 4.8mm. The grip length is 1 Inch / 25mm. The riveting grip range is 18-20mm. Please confirm the size when purchasing. 2??[ High-quality Material ]: The trifold pop rivets are made of high specification solid aluminum. Rugged and durable, with strong corrosion resistance and rust resistance, it can be used for a long time in various harsh environments such as deep water and is very reliable. 3??[ Powerful Functions ]: When installed, the unique three-fold rivet will expand in three different directions to form three anchor points under force. By increasing the contact area, it has better fixing and holding force, which is more practical than other rivets. 4??[ Multi-purpose ]: The aluminum rivet is very practical and widely used in a variety of occasions, such as commerce, automobiles, containers, industrial aviation, piping systems, furniture appliances, and oceans. It can also be used in canoes, ships, handles, kayaks, pole holders, etc.