The product is a set of 4 LEGO Technic chassis frame liftarm beams, specifically designed for a TECHNIC theme. These gray-colored pieces are part of the TECHNIC subtheme and are studless, featuring a 5x7 configuration. Perfect for building and creating intricate structures, these LEGO beams provide a sturdy and versatile foundation for any build project. Ideal for LEGO enthusiasts and builders looking to expand their collection with high-quality, durable pieces.