Callaway's Apex line of irons feature a loft range of 19 to 55 degrees, from the 3-iron to the sand wedge, as of 2015. The Big Bertha irons range from 20.5 to 54 degrees from the 4-iron to the sand wedge, for both men's and women's sets.
Both sets of irons are available in right or left-handed versions, along with a choice between standard graphite or steel shafts. Both the Apex and the Big Bertha clubs offer swing weight ratings of D0 for the graphite shafts and D2 for the steel. The women's version of the Big Bertha clubs all feature a standard factory swing weight rating of C3. The Apex clubs are not offered in women's versions, as of 2015.