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These models have been developed as the first Cordless concrete vibrators of the MAKSTAR series models. Model DVR350, is powered by 18V Li-ion battery. Lithium-ion batteries have greater life spans than their Ni-MH or Ni-Cad counterparts giving 430% greater run time. Lithium-ion's 40% weight saving means 18 volt power can be obtained by a battery that weighs the same as a 12 volt Ni-MH battery. Technical Info: • Vibration Amplitude 1.0 mm • Vibrations per Minute 13,000 min-1 • Body only machine • Voltage 18 v • Shaft Length 800 mm • Shaft Diameter 25 mm • Noise sound pressure 74 dB(A) • Noise K factor 3 dB(A) • Vibration no load 3 m/sec² • Net weight 2.9 - 3.3 kg