This headband device can be installed onOn the SR series, it is suitable for both large and small mice. Due to the small size of the head, the instrument can perform fine tuning movements at any fixed position on the head, along with auxiliary ear sticks. This allows the operator to check the firmness and whether the fingertip sensation is good. The tip of the ear stick can be determined by its intended use. If you have any needs, please consult us.