Magnetic Clip-Weld Frame Rail Adapter for Subframe Vehicle Floor Jacks. : This floor jack pad is made of solid aluminum with a nylon insert in the groove to protect the clip-weld from damage or deformation when lifting the vehicle. UNIVERSAL FIT: The floor jack pads fit most unibody vehicles and most floor jacks, each slotted jack pad has a 0.51Inch opening width and a 1.02Inch slot depth. The base diameter is 2.83Inch. Strong Support: Unlike ordinary rubber jack pads, it is extra equipped with 2 mounted neodymium rare earth magnets, mainly used to hold the jack in place when you place it, and increase the fixing strength when lifting the vehicle. Note:The jack pad should be used with a floor jack with a flat top. If your jack is an old model, you may need a space. This jack pad is not suitable for convertibles, please check the size carefully before ordering. Please check as much as possible to make sure the item is what you need. Tips:The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use. Colour:As Shown Material:Metal Package Contents: 1 * Vehicle Floor Jack Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.