Overview: If you operate or maintain CNC machinery, make sure you don't run out of carbide milling cutters bits with this box of 5 brand new 0.5mm spiral flute replacements. Specification: Type: spiral flute carbide cutters Total length: 36mm (1.4") Flute length: 3.2mm (0.1") Mill diameter: 0.5mm (0.019") Shank diameter: 3.45mm