Revolutionary - Titanium Nitride Coating. Guaranteed minimum of 3 times extended tool life. Faster, smoother & cooler finishing of all materials. Brand : Goldies Coating : TiN (Titanium Nitride) Cut : Cone Dremel Code : Carving/Engraving Format : Cone Length : 2.3mm (.090") Made of High Speed Steel Shank Diameter : 3/32" (2.35mm) Shank Type : HP Shape: 8 Tool : Rotary Tool Tool : MOTO-TOOL