040 Head Diameter 13mm Cut Length 30,000 Max Speed Materials: Chrome Cobalt, Hard Acrylic, Metal Alloy, Composite, Plaster & Stone Clinical Use: Trimming Partial Denture Framework, Trimming Dentures, Trays, Temporary Restorations, Trimming Crown and Bridge Metal Substructures, Trimming Temporary Appliance and Restorations, Trimming Models & Dies