This set includes nine dies, each designing for high precise cutting on various metals like iron, aluminum Discover precise and durability with the metric hand thread die set, crafted from alloy steel for superior hardness and long lastings Perfect for use in mechanical manufacturing, repair work, and home crafting projects, ensuring reliabled thread across applications For professional technicians, DIYer enthusiasts, and engineers, this die set meets diverses threading needs with ease and efficiency Featuring tapered locking holes to loosening and clearly marked specifications for easy identification, this tool set is a must having addition to any toolkit, Manufacturer: TFAOYS