The internal stiffening of this hollow iron called PWR-BRIDGE is a hefty 70-grams and has been reworked into an “untethered” configuration, fastened at the toe and heel with the entire interior injected with a polymer to help with sounding dampening and feel at impact. A set of seven with steel shafts is $999 and with graphite shafts $1099. Aerojets are available in the usual variable length or One Length.