The most useful diagnostic & therapeutic stick used for identifying correspondence points and treating those points by massaging. These are different types of Probe, Plain Probe, Probe with lens, Probe with massager, Probe with Spring used for Onnuri Auricular Therapy For special Su-jok points of your finger. Use it in su-jok treatment. Essential tool for Sujok Therapist and Acupressurist. INDICATIONS: Improves digestion system, stimulates blood circulation & total health. It is made up of stainless steel & brass.