Please check if shuriken are legal where you live. Shuriken as throwing blades are illegal in Canada.
Historically, what we call shuriken were nail pullers for construction workers in Japan. This is what they are here being sold as. There are several types available, and are fully customizable, and available at various stages of production for affordability. They are cut on a CNC machine for perfect geometry. The standard is 3.5 inches wide, 14 gauge mild steel.
When selecting "progression", each method includes the ones before it; therefore, selecting "sharpened" also includes cut, deslagged (the slag is taken off from the CNC process), tempered (heat treated in a forge to harden the metal), painted (to help prevent rust), and sharpened (using 1000 grit aluminum oxide).
If you want any customization, such as metal type change or thickness, colour, size, anything, feel free to contact us. Any style can be done. Just tell us which one you prefer from the drawing, or send your own!