I purchased this item to replace the pressure gauge I already had in my shop. I use these items semi-daily. This item is metal but the fit and finish of the item is "POOR" and sloppy! It is extremely difficult to connect to any valve stem, be it a bicycle tire, car tire, or any recreational item that requires air. If this is what you need to deflate a tire then you have made the right choice. Don't fret like me and don't buy this product. Many Thanks