Poor product description by amazon.com
When I purchased this gage, the product description said it would fit my 98 f150. When I attempted to use it, there was no schader valve fitting for my truck. This may be a great tool, but I've got to buy an adapter so I can use it. When you buy from amazon.com you better be sure before you pay. This is my first and last purchase from amazon.com, in the future I'll go somewhere so I can see what I'm buying, like Sears.