This Jack Pad is a protect to the weld and rocker panel can fit the weld on most uni-body style vehicles
The white block in the slot is magnet can help to hold the pinch weld firmly,make sure it's safety when lifting the vehicle.
Magnetic Jack Pad size:2.83x2.83x1.4 inch, the slot size:0.5x1 inch It's an universal jack pad ,anyway ,better to make sure the width of slot fits your frame rail before your purchase.
Safety precaution , no matter you're using a hydraulic jack or a scissor jack to lift your car, put the tires under car frame before lifting.
One Jack Pad Frame Adapter, one year warranty.