As in total weight or swing weight? Ping game improvement irons are C9 in stiff graphite and C8 in regular graphite. The G Max irons are well down in the C's swing weight in graphite. You can request lighter or heavier swing weights. Not sure how light they would go, but mid C's swing weight is pretty light. They also have a super light shaft in the 40 gram weight. So, my guess is they can get very light if requested.