Marson Klik Poly-Nut Inserts. Marson KlikÂ® Poly-Nuts. Aluminum & Plated Steel. KlikÂ® Poly-Nuts can be used in a wide range of applications and are designed to provide a very efficient and cost-effective method of placing permanent threads in thin materials. Installed from one side, KlikÂ® Poly-Nuts are perfect for use in metal, fiberglass and rigid plastic previously too thin for tapped threads.
Cerebrospinal fluid (CSF), a clear, colorless fluid produced in the brain, contains glucose, proteins, and other substances also found in the blood. CSF surrounds the brain and spinal cord, serving as a cushion for the brain in the skull.
When this fluid leaks from the brain or spinal cord, it is called a cerebrospinal fluid leak, or CSF leak. When the fluid leaks, the pressure around the brain and spinal cord drops. If you have a cerebrospinal fluid leak, the clear fluid may drain from your nose or ear(s). The most common symptom is a headache that improves when you lie down and worsens when you sit up. The headache may be accompanied by nausea, light sensitivity, and a stiff neck.