Ping Irons require taper tip shafts, which means they are not to be tip trimmed. You can hard step the shafts once or twice; but it will require 1 – 2 additional shafts to complete the set. Example> 6I shaft to a 5I shaft to hardstep once. Hard stepping just once may not yield the playability you are looking for. Also, Ping uses a very strong epoxy and extra time & care is need to pull shafts with an extractor. Hope this info helps.