In the inboard world there are two materials used for props, stainless and Nibral, a metal alloy made from nickel, bronze and aluminum. All modern wakeboat props are made from Nibral. Yes you could get a stainless if you wanted but mfgrs won't use them due to cost and the repair factor if you hit your prop. Nibral props can be repaired as said short of a blade missing so do not let anyone tell you they cannot be repaired. Contact the mfgr or a local prop repair facility and have it fixed.