Specification:

Voltage : DC-20V 
No load speed:0~500/Min&0~1650/Min
Torque: 0~100NM
Chuck Size :13mm                                      
Motor :5020#

Brushless  motor, max. power, best performance & longer life time
Convenient to use without cord
Powerful motor for the toughest applications
Soft grip handle for comfortable working
Large trigger switch with variable speed
Lock-on switch for continuous working convenience        
Built-in LED worklight