Size:Approx.21.7x4.4cm/8.54x1.73inches Size: Screw-to-hole diameter: Approx.19cm/7.48inches Material:aluminum alloy. Package Includes: 1PC Fasten Bracket Color:Black/Red/Blue/Silver/Purple/Green/Gold/Titanium Features: Made of high quality aluminum alloy. Can effectively tie down the battery. The surface is anodized for a long lasting, brilliant finish. Easy to install. Fit for universal car. A perfect modification accessory for racing, sports, etc. Note 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.