Our Signature Heart GuaSha Massage Tools are hand crafted from 100% YUGI - Korean Bronze: (Cu)78 : (Sn) 22 . Due to natural formations in the metals and hand craftmanship, each tool will be unique and the color will vary slightly from the picture shown. Minute natural polish and air marks may be present.
 
Size: 3.7 in x 2.1 in x 2.1 in  (+/- .1~.2in)
Area of Use: Face, Neck, Arm, Leg, Upper/Middle/Lower Back, Sensitive Body Area - for Lifting/ Lymph Drainage/ Acupressure Massage and More.
Weight: approx. 520g (up to +/- 20g)
 
All YUGI Metal GuaSha products may emit a metal-like odor due to the natural material [Korean Bronze: (Cu)78 : (Sn) 22] present in the products.
 
 
[ Why YUGI Metal? ]
 
1.Copper alloy surfaces kill bacteria and reduce hospital-acquired infections.
 
Michels HT, Keevil CW, Salgado CD, Schmidt MG. From laboratory research to a clinical trial: copper alloy surfaces kill bacteria and reduce hospital-acquired infections. HERD: Health Environments Research & Design Journal. 2015;9(1):64–79. 10.1177/1937586715592650.
 
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4561453/
 
2. Durability - You will be able to get extended use out of the GuaSha tool if you follow the YUGI Metal Care Methods as long as you do not physically damage the tool.