Show sample as: 72-frame QuickTime VR or 360-frame QuickTime movie loop.    My periodic table poster is now available! Commercial tungsten carbide lathe bit. This is a small tungsten carbide lathe bit. Most of the bit is steel, only the triangular chip at the end is tungsten carbide. Source: Hardware Store Contributor: Theodore Gray Acquired: 1 December, 2008 Text Updated: 2 December, 2008 Price: $10 Size: 0.25" Purity: >60%