Package includes 16Pcs 80mmx80mmx1mm/3.15"x3.15"x0.04" (L*W*T), 5mm/0.2" Mounting Hole Dia. 5 Holes Black flat T brackets and 80Pcs 4x16mm(D*L) screws. Made of Carbon Steel material, these mending metal plates are not easy to rust, stable and durable.