MakerBeam XL 50mm and 100mm beams for Maker projects and professional prototyping. Contents: 8 aluminum clear anodized beams measuring 15mmx15mmx50mm width, height, and length (0.591x0.591x1.968") and 8 aluminum clear anodized beams measuring 15mmx15mmx100mm width, height, and length (0.591x0.591x3.937") Application: scientific, electronics, laboratories, home technical projects, displays/exhibits, robotics, etc. MakerBeam (XL) is a versatile and lightweight structural system (T-slot) with components that give endless building possibilities. There are no fixed positions for mounting giving you the freedom to build your own design easily. All MakerBeam XL elements can be combined and reused (no welding required) enabling shorter design and assembly times.