【HIGH QUALITY】Aluminum rivet body and lightweight steel rivet mandrel, but they are strong, corrosion resistant and durable. 【STRONG SUPPORT】 - Compared with the traditional type, rivets with large flange and larger contact area can effectively prevent rivet loosening. There is a great improvement in practicability. 【RIVET SIZE】 - The rivet body size is 4.8 x 12 mm and the flange size is 16 mm. 【APPLICATION】 - Widely used for connecting parts with high strength or easily damaged requirements such as buildings, ships, cars and furniture. Ideal for indoor and outdoor use. 【PROFESSIONAL】 A rivet gun or other professional tool is required to install these blind rivets.