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The rat rotation adapter is specially designed for some special applications, fixing the rat head with a pair of ear rods, nose, and incisor clips. The rat head can be rotated according to experimental requirements, making it convenient to operate various parts of the rat head in different directions. The upper and lower adjustment range of adapter is 30mm (+10mm~-20mm), and the front and rear adjustment range of adapter is 45mm; The rotatable angle range of the head is 60 ° (+30 °~-30 °).