This FastenMaster Cortex Hidden Fastening System is perfect for Trex Fascia installation. The system includes 120 oz of deck screws with a #3 screw size, suitable for use in building and hardware projects. The screws are made from high-quality materials and come in a pack of 100.

The ISLAND MIST model of this system is designed for ease of use and provides a secure and hidden fastening solution for your project. The screws are 4 inches long and made in inches, making it easy to measure and install. This system is ideal for home improvement projects and is a must-have for anyone looking for a reliable and efficient fastening solution.