Fine Toothing with Cross Cuts - Carbide Lab Bur - 3.1mm/13mmFine Toothing with Cross Cut Burs are used to trim standard acrylics. They can also be used on precious metals including titanium. Not for intra-oral use For straight handpiece onlyHead Size: 3.1 mmHead Length: 13 mmMaximum Speed: 100,000 rpm