Description brand new and high quality Feature: Easy installing, without any tool. Make sure to clean and dry the install location. Compare with the install location, find the best location to install. Tear off the glue sticker, use the h dryer to warm up the adhesive tape before install. Fixed position, stick from one side. press firmly free minutes. Donfor t exposure to sunlight or for touch the water within 48 hours. Car Volume Knob only, other accessories demo in the picture is not included! Compatieble Model: Fit For A Class B Class E Class GLK GLA CIA GLE ML GL Specifications: Material: Aluminum Alloy Bottom Diameter: app.3.1cm/1.22in Upper Hole Diameter: app.2.2cm/0.87in Thickness: app.1cm/0.39in Color: Silver,Blue,Red Quantity: 1 Pc Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Contents: 1 x Car Volume Knob