Wooden Gua Sha Roller Stick - 8/10 Beads Massage Tool for Meridian Relaxation, Muscle Knot Relief & Abdominal MassageSPECIFICATIONS High concerned chemical: None Usage Mode: Manual Specification: Material: beech or carbonized wood (optional) Function: scraping, rolling, acupressure describe: Material: Wood therapy massage tools are made of natural wood, with clear texture, strong and durable, non fading, no burrs, smooth , and will not cause harm to the skin. New design: 20 acupressure massage point design, imitating finger massage, deep massage of the whole body,