The TSi1 fairway metals are a true lightweight setup–almost 50 grams lighter than standard fairway metals. This was accomplished by taking 10 grams of weight out of the head while maintaining them at the same level as the TSi2 fairways.To accomplish that, the CG depth is positioned further back which contributes to higher launch. Like the driver, lightening up the overall weight for fairway metals delivers the club speed, brings more ball speed, and gives that player a lot more playability and consistency.