Angle grinders are one of the most versatile power tools each toolbox has to contain. No tool can replace this compact, robust unit for sanding, grinding, smoothing edges, and even cutting metal, ceramic, and masonry. So, they’re the staple of each workshop because of their vast applications. Ronix has manufactured a lightweight and ergonomically designed cordless mini angle grinder to let you roam freely in your workshop.Ronix 8901 mini angle grinder, with its high-performance brushless motor and 20V/4 Ah lithium-ion battery power source, is a member of the Ronix long-lasting series. All newly released Ronix Lasting Series members use brushless technology in their motor structure. Thanks to the less complicated winding method with the lowest physical interface and friction, motors equipped with this technology operate with far less audible electrical noise, higher speed, and higher efficiency. Features High performance brushless motor delivers up to 8500 RPM no-load of speed in Light-weight, ergonomic mini angle grinder suitable for precise applications Soft start switch system that ensures the safety of operation Direct airflow system which cools the motor for more reliable performance and higher overload capabilities Special slim body design for ideal handling and higher working performance Electronic current limiter for overload protection 2 positions anti-shock ergonomic side handle which promoting easy work and perfect machine control in different range of operator movements Anti-restart function prevents accidental start-up Specification Model: 8901 Battery Type: Lithium-ion Battery Voltage: 20V No-Load Speed: 8500RPM Wheel Diameter: 115mm Spindle Size: M14 Bore Diameter: 22.23mm Noise level: 88db Body Material: PA6+GF30 charging time: 100min No-load Running Time: "12 min /2.0Ah battery 27.19 min /4.0Ah battery" Weight: 1.34Kg packaging: color box Accessories: "1pc wrench 1pc handle 1pc guard"