Hi David. You just need to place the “cap” ends on each end of the handpiece, and autoclave it. There is no worry about “suckback” because of the way the handpiece is manufactured. Just make sure you really have the handpiece dry, very dry, before you place it on the trunkfiber assembly, any moisture in there, and poof, there goes your mirror. I have 4 handpieces, so they are always ready and dry, while the latest one is in the autoclave. Remember though, I don’t use a drill that often, my laser IS my “drill”, so that is why I have a contingent of handpieces, just my need.
Mark