Theory: New plastic ring and innovative elastic string for medical use, insert the main ring onto the glans(over the glans and under the foreskin) to the corona groove,wind the spandex(elastic ring) around the sunken part of the ring,which blocks the blood flow to make foreskin necrotized. Traits: The product was authorized by Korean welfare ministry and it has improved the national health and welfare. Clinicians can easily do circumcision due to its easy and simple way with no incision, no suture and no pain. The wound is smooth and with non obvious scar after healing. The product is disposable, minimal invasion,under EO gas sterilization, very safe and cosmetic results without any danger of the second infection. There is no any negative impact to our daily life during the operation period. This new innovative device can be performed in the hospital,clinic or any health center based on correctly following the operation instructions. 20pcs/box, 12boxes/ctn CTN dimension for ault type, 45*30.5*20.5cm For child type, 36.5*25*17.5cm.