P7MB iron set, equipped with Modus 105 shafts, 6-piece set. - Model: P7MB - Quantity: 6-piece set - Shaft: Modus 105 R, genuine custom - Muscle back Thank you for viewing. I purchased this on Mercari, but I'm selling it because I haven't had much opportunity to use it. There are minor scratches from normal use. I think the heads are relatively forgiving for muscle back irons. The shafts are flexible, so I didn't find them difficult to use. It ended up unused, as it didn't replace my main irons. Thank you for your consideration.