Product details:

PING GMAX K1 Irons are longer at it's COR. The GMAX K1 irons are designed with stainless heat-treated heads for a 40% stronger face. The back of the cavity is designed with an elastomer CTP wight, and an aluminum cavity badge w/damping tape. It is a longer blade with increased offset to increase distance, forgiveness, and launch angle. The wide sole design helps achieve a low/back CG for forgiveness, stability at impact, and consistency.