Quick accessory change & adjustment; no Hex Key required Items Included: Specifications Power Input: 170 Watt Power Output: 300 Watt Oscillations per Minute: 0 ? 22,000 Switch type: Trigger / Variable Speed Tool-free Accessory Fitment: Yes Kit Box: Yes / T-Stak Sound Pressure: 86 dB(A) Sound Power: 97 dB(A) Sound Power Uncertainty: 3 dB(A) Sound Power Uncertainty: 3 dB(A) Hand/Arm Vibration: 16.1 m/s? Uncertainty K 1 (Vibration): 1.5 m/s? Weight: 1.475 kg Bosch Accessory Fitment Adapter: Yes Lock-on switch: Yes Lock-on switch: Yes Sound Pressure Uncertainty: 3 dB(A)