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A brass pi disc — the plain ring form — on a stainless keyring, with the flat face polished and the edge left slightly rough. The simplest of the brass keyring shapes.
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The pi disc is a ring with a hole — one of the oldest forms in Chinese jade work, and one of the easiest to translate into metal. At this size it is a flat washer with a slight dome, polished on both faces.
Simple enough that it is hard to get wrong, but the difference between a good one and a cheap one is the polish in the inner hole, which most makers skip. Cast brass on a stainless split ring.
Details
Material
Solid brass (lead-free), 304 stainless steel split ring
Size & weight
Disc approx. 3 cm diameter; overall approx. 8 cm; approx. 35 g
For entertainment and cultural purposes only. BaZi and the Five Elements are traditional
Chinese cultural frameworks — not medical, psychological, financial or legal advice.
Always consult a qualified professional for important decisions.
Safety Not a toy. Keep away from children under 3. ⚠️ WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. This is an adult collectible/decorative item, not a children's product.
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