This is a set of Klett RK-2 Small Nylon RC Airplane Hinges. 15 hinges bulk packed. These are USA made from USA Nylon and have a steel hinge pin. These hinges have two holes in each side. You get: 15 hinges Approx 7/16" x 1-1/8" total unfolded length. The tabs are .023 - .026" thick.