jayhitek

I have a Bosch hole saw kit. Comes with the Power Change 510. One of the balls fell out that holds in the pilot bit in place. Only replacement part i can find that is close is the PCM12. Is it the same thing? The top hex is 11/16" Holds a 1/4" pilot bit. The hole saw inserts that go inside this thing are hex 7/16" There is also a PCM38 and not sure the difference. Thanks, Jay