Features: Black surface treatment, beautiful and durable. Good choice for 3D Printers, Plasma, Lasers, Stands, Furniture, DIY, etc. Standard 2040 V Type aluminum profile extrusions are perfect for custom machine frames. Specification: Model: 2040 Slot: V-Type Material: Aluminum Alloy - 6063 T5 Color: Anodized Black Temper: T3-T8 Tolerances: Length (+/- 0.5mm) Weight: 0.81kg/m(1.785lb/39.37inch) Length: 300mm(11.81inch) Package Includes: 2 x 2040 V-Type Aluminum Profile