The Allen® C-Flex Polar Head Positioning System allows you to use your Mayfield® Skull Clamp with your Allen® Flex Frame. Just grip the handles, position the head, and release to lock. The C-Flex finally makes cervical positioning fast, easy, and accurate. The C-Flex is a modular system, so it can be used for any type of spinal procedure, prone and supine. The extensive range of motion makes the C-Flex ideal for kyphotic patients and multi-positional procedures such as the XLIF™. Additionally, the C-Flex finally makes intra-operative adjustment a reality.