Overall Product Features- 
Two Year Limited Warranty
Brushless motor design carbon brushes NEVER need changing
Maximum Torque or Watts Output 10 oz. in or 70mNm or 230W. Powerful even at minimum speeds
Sealed housing eliminates dust, noise, and vibration
Additional port for Brush Type Micromotor Handpiece: 

This brushless micromotor is ideal for various applications at high, medium and low speed. 

• High Speed Applications: Running at high speed, it provides smooth, clean, and sharp detailing in metal and wood. It's also great for bright-cutting, grinding, finishing, texturing, and polishing. You never need to changes the brushes on this handpiece.

• Medium Speed Applications: At medium speeds it is ideal for effortless and fast stock removal in wood, diestone, or acrylics.

• Low Speed Applications: The low end offers extra control and power for stone setting and milling. 

HP4-817-2 (230V) Control Unit and Front Panel LED Specifications and Features-
50/60 Hz, 100VA, 5.4" wide, 9.1" deep, 7" high
Dial speed control sets precise speed and torque
Auto cruise, Forward or Reverse rotation, Dial or Foot speed control
Digital display for precise speed and torque settings
Built in overload protection
Brushless micromotor handpiece connects to port on back side of control box
Brush type handpiece connects to port in front.

H.MH-150 Brushless Handpiece/Motor Specifications and Features -
6.3" long, 1.06" motor diameter, .75" grip diameter, 8.4 oz/237.7 gr., 115 volt
Ergonomic and brushless with long-lasting ceramic ball bearings
Bur changes are quick and easy with a simple twist of the front section of the Handpiece. 
Comes with 2.35mm (3/32") or 1/8" collet installed.

H.MH-170 Brush Type Rotary Handpiece/Motor Specifications and Features -
 6.2" overall length, 5/8" grip diameter, 1" motor diameter, 7.3 oz./208 gr., DC30V/1.2A. CE 
Handpiece has a slender, contoured grip for precise and very high speed work up to 38,000 rpm. It has a fan cooled, brush-type continuous duty motor that runs cool and vibration free with permanently lubricated, shielded ball bearings that require no lubrication. 
It comes with a 2.35mm (3/32") or 1/8" collet installed. Bur changes are quick and easy with a simple twist of the front section of the Handpiece. 
Collet Adapters are available for simplifying changes between accessories with different shank sizes.

Comes supplied in Kits K.1070 and K.1090. Also works with the same HP4-917 Control Unit that comes with Micromotor Kits K.1020 and K.1080.