A pack of Ten 1/8" HSS engraving bits single flute replacements for CNC machinery， these long-lasting bits are made from high quality HSS for a precise， easy cutting experience. Non-stick knives， smoke-free， tasteless， mute， mirror grinding process design. Large capacity Chip groove， and spiral cutting edge sharp， greatly enhance the efficiency and quality of products. A Wide Range of Materials can be engraved， including: wood， ABS， Acrylic， PVC， plastics， Copper， Aluminum etc.Material:High-speed SteelDiameter of Shank: 3mm / 1/8"Length of Shank:38mm / 1.49"Package included:10 X HSS Router Bits