1.Do these handpieces fit onto that flexshaft?
yes, tho it will work with your cc it is nicer to have a machine
that has even torque at all speeds.
2.How do you know what rpm you're running (e.g., the #15
says not to exceed 5000rpm)
when it starts to have a life of its own, it is time to slow
3.How does the darn thing work?
it slips onto the end of the sheath, just like any other
handpiece. it has a reciprocating tip that acts like a miniature
jackhammer best regards,