This driver is a limited edition (only 2500 will be produced) that celebrates the vision of Ely Callaway who founded Callaway Golf in 1982. It features a square-shape and utilizes Fusion Technology, which allows weight to be distributed to the far corners of the clubhead for improved resistance to twisting, resulting in more accurate drives. The 25th Anniversary model is individually numbered and features a silver coloring on the crown, sole, shaft, and grip.