Milwaukee C12RT-0 M12 Compact Rotary Tool - Body Only Features: REDLINK overload protection electronics in tool and battery pack deliver best in class system durability Variable speed (5000 - 32,000 rpm) 0.8 mm - 3.2 mm collet fits all current accessories in the market Spindle lock mechanism for easy accessory changes Superior ergonomics and lightweight Individual battery cell monitoring optimises tool run time and ensures long term pack durability Fuel gauge displays remaining charge Flexible battery system: works with all Milwaukee M12 batteries Comes With: 5 x cutting wheels 1 x Mandrel Specification: Voltage: 12V No Load Speed: 5000-32000 rpm Collet size: 0.8-3.2mm Max grinding body diameter: 25mm Speed Settings: 6 Sound pressure level (dB(A)): 73 Sound pressure level uncertainty (dB(A)): 3 Sound power level (dB(A)): 84 Sound power level uncertainty (dB(A)): 3 Vibration grinding (m/s_): 3.1 Vibration grinding uncertainty (m/s_): 1.5 Vibration sanding (m/s_): 2.6 Vibration sanding uncertainty (m/s_): 1.5 Vibration cutting (m/s_): 3.4 Vibration cutting uncertainty (m/s_): 1.5 Vibration drilling into Metal [m|s_]: 2.4 Vibration drilling into metal uncertainty [m|s_]: 1.5