100% pure magnet with strong adhesion.You can adhere to any iron products you want to place. (For eyeball radar unit,not the planar one) Fit for eyeball radar sensor unit only, not the planar one. If you need the planar one , please click this ebay link: https://www.ebay.com/itm/364815181493 You will also need the item for the calibration process: --- A diagnostic scanner that supports ADAS functions Applications: For Benz Land Rover Tesla Ford Chevrolet Jeep Dodge (Eyeball radar unit,not the planar one) Type of Calibration: For ACC Dynamic Calibration(Not Static Calibration) What's in the box: 1* Radar Angle Leveling Tool 1* Mini Digital Protractor(Magnetic) 1* HEX KEY 3.