DGA900Z Brushless 230mm Angle Grinder 36V (2 x18V) Bare Unit The Makita DGA900 Brushless Angle Grinder is powered by 2 x 18V Li-ion batteries (NOT supplied) , in series to supply energy to the powerful 36V DC motor drive system. It has an electronic current limiter for overload protection, soft start and anti-restart function for ease of use. Active Feedback Sensing Technology (AFT) : shuts down the tool to protect the user if the rotation speed suddenly slows down. Automatic Torque Drive Technology (ATDT) : automatically changes the cutting speed according to load condition for optimum operation. For added safety there is also an electric brake. The ergonomically designed handle features a soft grip and there is also a large switch lever with lock off function. Battery indicators help prevent over-discharge and overheating. Comes as a Bare Unit, No Battery or Charger. Specifications: No Load Speed: 6, 000/min. Wheel Size: 230 x 22.23mm Bore. Max Wheel Thickness: 6.5mm. Weight: 8.