1, Rivet , blin rivet . 2, Size :L:138.4MM Rivet , we are professional in this field so that let us suppy the best price and quality to you .Code:RS0011, Size:L:138.4MM2, Material:steel3, Color:Nickel plated4, Weight:31g We have many sizes , wecome your kindly inquiry for the exact size . Rivet