Versamill (6mm) 5x200/100 Metal Milling Burs from BT3 Dental. BT3 Metal tools are designed for dental milling of Cobalt-chrome and Titanium. BT3mod multi-layer Metal coating was engineered for high reliability and accuracy. Features Cobalt-Chrome, Ti alloys Extended Tool Life Smooth Surface Finish High heat resistance *not affiliated with or a trademark of BT Designs LLC. All Trademarks are property of respective owners and only used for identification purposes