The full library includes 220+ materials , featuring metals, plastics, wood, glass, and car paint.

The file "EEVEE-Cycles-Materials-V9.1" is part of the created by Chipp Walters . This system is a popular library for Blender designed to provide photorealistic materials that work seamlessly in both the EEVEE and Cycles render engines. Key Details of the Material System

Most materials are designed to be applied without requiring complex UV unwrapping.