Specifications : Straight grinder type Battery type Li-Ion Sound power level (LWA) 90 Number of batteries included 0 Battery voltage 18 Maximum grinding wheel diameter 25 Minimum speed of revolutions per minute 10000 Maximum speed of revolutions per minute 25500 Compatible with 2 Ah, 4 Ah, 6 Ah, and 8 Ah E+ batteries The GRAPHITE 58GE146 Energy+ Straight Grinder is an advanced tool designed for precision grinding and machining of various materials. With six adjustable speeds ranging from 10,000 to 26,000 rpm, the device allows you to precisely match the work pace to the specific task. Equipped with a 6 mm collet and the ability to use grinding wheels up to 25 mm in diameter, this GRAPHITE grinder is incredibly versatile. A soft start function and an ergonomic, rubberized handle increase user comfort and safety. The brushless motor guarantees high efficiency and long tool life, making it an ideal choice for both professionals and DIY enthusiasts. Product features: straight grinder, Energy+ series of cordless power tools, rotational speed 10,000 – 26,000 min-1, speed regulation – 6 levels (10,000/ 13,500/ 17,000/ 20,500/ 23,000/ 25,500), brushless motor, spindle collet diameter – 6 mm, maximum grinding wheel diameter – 25 mm, soft start, ergonomic, rubber handle. Battery operating time: 2 Ah Energy+ = 28 minutes, 4 Ah Energy+ = 54 minutes, 6 Ah Energy+ = 84 minutes, 8 Ah Energy+ = 114 minutes. Set includes: GRAPHITE straight grinder, 2 wrenches. **