Callaway X Hot Irons for sale move the "hottest" part of the clubface lower
"The X Hot Irons have been meticulously engineered - both in terms of physical characteristics and club configuration--to increase ball speed and promote overall distance optimization," said Alan Hocknell, Callaway's Senior Vice President, research and development. "And in doing so I think we have raised the bar and created the standard in distance for the irons category."
Callaway Golf calls its X Hot set "aggressive irons" that produce "measurable distance gains" over previous generation Callaway irons.
In the X Hot irons, Callaway takes the "Speed Frame Face Technology" it's been using in its drivers and utilized it in irons. That tech is designed to create a better transfer of energy from clubface to golf ball, thereby boosting ball speed and distance performance.