DuraDi Diamond Coated Ball CAD/CAM Carbide, Roland End Mill, 1mm, 1/Pk. Long reach dental bur for use with DWX-4, DWX-50 and DWX-51D, 52DC. Extended reach allows to mill material 10mm to 26mm in thickness, and is approved for milling PMMA, Wax, Zirconia, Composite. Lasts up to 10 times longer than many standard carbide tools. Medium sized bur is used mainly in the roughing and finishing milling of dental prosthetics. Overall length: 50mm, shank diameter: 4mm. Cutter design: 2 flute ball end. 1/pk