  Unusual tungsten carbide drill bit. 
This is a very pretty, and unusual, tungsten carbide drill bit meant for drilling ceramic tile.  Most such bits have a single spear-point-shaped piece of carbide brazed to a steel shank.  This bit has four pieces brazed together to form a square.  Presumably it cuts more smoothly and gives a rounder hole, though I can't say I've actually tried using one like this.  It's too pretty for that. 
Source: Hardware Store 
Contributor: Theodore Gray 
Acquired: 1 December, 2008 
Text Updated: 2 December, 2008 
Price: $20 
Size: 0.5" 
Purity: >60%
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