gSource spinal IVD rongeurs are crafted from high quality German surgical stainless steel for use on intervertebral discs. Their main purpose is to grasp or excise tissue, degenerated disc material or bone during spinal and neurological procedures. Jaw bite styles include straight, up or down and bite sizes range by pattern with millimeter bite size etched on handles. Please inquire about the availability of any size and style not shown on our website or in our catalog.