... into the POM, PA66 material production; the product of environmental protection, corrosion resistance, non-conductive, easy installation, light weight.2. ... qualified NYLON66, fire rating 94V-2.3. Product Features: environmental protection, aesthetics, light weight, easy to install, push-in installation, ... .5. Other: meet the ROHS, standing stock, common industry. high quality plastic book screw SN-15G