1/2" square anvil - suitable for heavy duty applications indoor or outdoor Brushless motor enables cooler and more efficient running to help battery power last up to 50% longer Delivers up to 350Nm of torque with continuously variable trigger and 3 speed cap settings to suit a range of applications Durable but lightweight design reduces user fatigue without any loss in performance Long lasting 18v Li-ion battery helps minimise the amount of time lost waiting for charging