3-Piece Combo Includes: The Classic Motor The Classic Motor is engineered and manufactured for years of trouble-free performance. Extremely high torque. Low noise, lightweight and perfectly balanced. Adjustable forward and reverse up to 20,000 rpm. 1:1 Straight Nose Cone 4:1 Reduction Nose Cone Both nose cones feature a simple and extremely safe locking mechanism that makes changing burs or latch heads fast and easy. Full 360° swivel makes even difficult angles easy to approach.