This 20 piece professional dimple and riveting set is ideal for any riveting project. All components are made from stainless steel, heat treated and hardened. Mounted in a hardwood block. FLUSH FLAT SET:1 ea 3/8″ diameter in 1/8″,1/4″ 3/8″, 1/2″ lengths, 1 ea 1/2″ diameter in 1/8″, 3/16″, 1/4″, 3/8″ lengths, 1 ea 1/8″ An470-4 cup set in 1/8″ and 1/4″ lengths, 1 ea springback dimple dies in 3/32′, 1/8″, #632 and #832, 1 ea small female dies in 3/32″ and 1/8″ sizes.