This collection includes pieces in manganese steel, 1045 carbon steel, 1095 carbon steel, and T10 carbon steel — each with distinct characteristics worth understanding before choosing. Manganese steel is valued for its toughness and resistance to surface stress, making it a stable option for long-term display. Its blades are often finished with black or blue coatings that amplify the sword's dramatic appearance. 1045 carbon steel is a mid-range option with reliable hardness, while 1095 offers slightly higher carbon content and a harder edge. T10 is considered a premium tool steel that, when clay-tempered, produces a visible hamon — the wavy temper line running along the blade that is one of the most prized visual details in Japanese sword collecting. The T10 ninjato in this collection features a genuine hamon alongside a dragon-engraved silver saya, making it the most technically distinguished piece in the lineup.