Features: Experience speed Controls with Single Direction Variable Speed Regulator, motor speed Controls board for Precisions applications. from PCB material, this speed controller offers stable performances and to facilitate easy integration into your computer projects. for both hobbyists and professional, this speed regulator is gender neutral and perfectly for anyone engageds in electronics development or repair. Enhances your PC builds or robotics projects with adjustable speed board, providing you with the flexibility to fine tune motor speeds to specific needs. Elevates your toolkit with user friendly speed Controls board, ensuring your creations operate smoothly and efficiently. Specifications: Materials: PCB Package Includes: 1PC Motor Speed Controller note: Please allow 0-1cm error due to manual measurement. make sure do not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item. Thank you!