This tool is essential when you need to change inner tube tyres. I bought this to replace an older brand that broke after years of use. The main problem with this is that the brass fitting that screws into the valve stem doesn't include a cable like my old one did. This makes screwing it into the valve stem very awkward, as the entire train has to be turned. It doesn't seem like much unless you have to try and thread the bent cable through the valve stem hole in the rim. I would recommend looking for another brand.