22mm 20V Brushless 
Voltage: 20V
Motor: Brushless motor
Battery:4.0Ah Lion
No load speed:0-1350r/min
Impact Rates:0-4700Bpm
Impact Joules:2.0J
Steel Dia:13mm
Concrate Dia.22mm
Wood Dia:28mm
Net weight:2.0kg
Feature:
100% copper moor with strong cotton wre to prevent gravels against the motor
Brushless motor:more power and prolonged operation
Speed electronics for fine adjustment on delcate jobs
Integrated auti-oil leakage design,fully sealed to prevent oil leakage
Universal SDS-pls cuck with semi-automatic function
One buttion with 4 functions-Hammr&drilling,Dring,Chiselling,Chisel rotation