Here is the Mumyou-Ryu-Bo Shurikens-designed by Sensei Houzan Suzuki of Japan. Made by Dragonhoshidefense. Here is the steel I use. O1 tool steel is a low alloy cold work tool steel that must be oil-quenched in heat treatment. O1 contains small amounts of manganese, tungsten, and chromium, giving O1 adequate toughness for normal tool & die uses. O1 has deep hardening properties with fine grain structure with unusual toughness. O1 has good response to heat treatment with small dimensional changes. Sizes over approximately 2 inches thick or round may exhibit a lower hardness in the interior. O1 tool steel is available in standard de-carb free rounds, flats and squares, as well as the largest size selection in ground flat stock and drill rod of all the tool steel grades. ANALYSIS Carbon (C) Manganese (Mn) Silicon (Si) Chromium (Cr) Tungsten (W) Vanadium (V) Phosphorus (P) Max Sulfur (S) Max 0.95 1.2 0.4 0.5 0.5 0.2 0.03 0.03 A.I.S.I. O1 conforms to ASTM A681, DIN 1.2510, SAE J437, J438 APPLICATIONS Typical applications for O1 tool steel are blanking, forming, and trim dies, gages, slitting cutters, punches, bolster dies, knock-out pins, thread roll dies, bending dies, plastic mold dies, shims, cams, machine ways, stamps, machine parts, jigs, cutter templates, swaging dies, etc. You must be 18 years old or have parental consent when ordering these training weapons.

Please call or e-mail for a price 828-397-3638 or email me at- ninjakanji@yahoo.com. Thank You.