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Working on boats and yachts I use many fasteners of materials very susceptible to torque and breaking (brass, stainless, etc). I haven't found anything in the screw sizes that really bogs this tool down. The three levels of speed and torque are a real benefit and an aid in reducing the number of sheared screw heads. The length of battery life is also a real +++.
I can run the driver as low as 50 rpm's for starting small screws. I traded my Panasonic 12 volt impact driver with digital clutch for the new Lithium Ion driver. Panasonic has done it again. You really notice the weight reduction and perfect balance that few manufactures have been able to achieve. I feel this is worth the extra $$$ As far as power I did not notice the additional torque over my older model but what I like best about the new impact driver is the brushless motor and the very linear speed control.
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