The MD1 Flex Copper3D is an antibacterial 3D printer filament made by Copper3D. With a diameter of 2.85mm, this grey-blue filament is designed to be flexible and durable. The product comes in a 500g unit and is made of TPU material, offering quality and reliability for your 3D printing needs. Upgrade your 3D printer supplies with this innovative and color-changing filament for unique and high-quality prints.