Used with Leksell Stereotactic System® or Leksell® Vantage™ Stereotactic System and enables safe puncturing of intracranial cavities. The insertion needle diameter is 2.1 mm accommodating catheter diameters of 1.5 mm. All the components of the Catheter Insertion Needle Kits are made of stainless steel, with the exception of the guide insert and the stop insert, which are made of plastic and the ruler which is aluminum.