I found that this model heavy and it appears to be very robust. I found that the chuck runs true and the unit produces a serious amount of adequate ventilation I have noted several requests for a anti kickback version and several requests for the same version without the hammer drill function. It comes with a justfied industrial use rating. The trigger speed control of this unit is amazing. If you are about to buy your first cordless drill then look no further. Use impact driver bits for driving of screws. I suspect the hammerless calls come from those that remove broken bolts and taps. Maintain it good by blasting dust out of it and after prolonged screwdriving let the unit run load free for +/-60 seconds. It's a no regret purchase from my side.