The Matrix HD Radix 8 golf shaft weighs in at 82.5 grams and has a mid spin rate. It also has a high launch, which makes it ideal for senior golfers. In most situations the Radix 8 will bring your trajectory up (or down if your current trajectory is high) a bit. This shaft is perfect for golfers that are acquainted to golf shafts in the 79.5-87.5 gram range, but are looking for something a step above the rest of the market in terms of technology.