I have a lab bur that broke off in my handpiece, I am unable to get the wrench to romove the center of the handpiece where the bur is stuck,I have a Marathon N7 unit please help- Crystal
I have a lab bur that broke off in my handpiece, I am unable to get the wrench to romove the center of the handpiece where the bur is stuck,I have a Marathon N7 unit please help- Crystal