Back in post #10
@whydontu sent a link that will get you there. As did
@Susquatch I believe, but to find out what will fit yours, you will need to take your existing chuck off and do a little bit of measuring. Once you know what the specs are, you can shop around for the best price.
Hint, when you go to put the 3 jaw back on, lightly snug the bolts, then using a dial indicator, tap it in to run true with something you trust to be round mounted in the jaws....