Callaway Golf X Forged Irons Set Triple Net Forging ensures extremely tight tolerances which cant be achieved with conventional methods Bright Chrome Finish; Creates a smooth, appealing look at address 20 Closed Space V Groove; Produces tightly spaced grooves to promote more aggressive shot-shaping Project X PXi Shaft; New top-of-the-line shaft is lighter and softer than standard PX shafts