Mandrels support the ID of the catheter during the construction process. While PTFE and stainless steel are commonly used materials for this application, Zeus has introduced PEEK Engineered Surface as a superb replacement. Our capability to extrude micro-structured channels along the length of the mandrel increases the lubricity of PEEK by as much as 40 percent, according to independent testing. The inherent strength of PEEK provides a solid core mandrel while the enhanced lubricity allows for easier removal after the construction process.