I am sure they are interchangeable with Crist spears parts though. Aaron Crist isi very helpful and would probably sell you what you need.

Hey bud, sorry but I recently sold all my parts.

Hey Justin I bought a Keller pole spear from you a while back in Orlando and saw you have a couple of them. I was wondering if you have any extra or spare tips you would like to sell? I cant find them anywhere. Thanks!