10.5 mm wide blade, 8-7/8″ (22.5 cm)?Campbell Nerve Retractor is specially designed for use in neurosurgical and other procedures that require manipulation and retraction of nerves. This retractor features a ribbed handle from which extends a slightly curved neck and a retraction blade. The slightly sloping the neck gives this an ideal contour for use in the spinal surgery or in craniotomies.