Features: Good quality products, ensure working smoothly, security. Made of material, durable use for long-time. High hardness, strong and-tough. Precise hold-cutting. This motor mount bracket owns convenient mounting-holes. Steel material, thickness 3mm, exquisite workmanship, surface-paint-treatment. Specifications: Material:Aluminium Alloy Bottom-surface: 40x43mm Height: 47mm Thickness: 3mm thick aluminum alloy Central aperture: about 12.8mm. Distance between side fixing holes: 25mm Bottom fixed hole spacing: 25mm, 30mm (transverses) Side fixed aperture: M3-hole Bottom fixed aperture: M3-hole. Color:Black For 550 545 555 540 The motor bracket is equipped with 2 screws. Note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1x Motor Bracket 2x Screws Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.