High Speed Surgical 45 degree head Electric Attachment Cellular Glass Optic; Dual Defense - Clean Head System Push Button Chuck for FG surgical burs Microfilter 1:4.2 Gear Ratio 168,000 rpm Max Speed Titanium Body with scratch resistant DURAGRIP 4 Water Spray with 2 way water-function (Water Jet/ Water Spray) Ceramic Bearings Anti-Heat System E-Type