Ernie Ball Power Peg Pro, Battery Powered Peg Winder

Pros.1.Very fast.2.Torque is good.3.Powerful.4. 6-8 Hrs of working time or 7-8 guitars in a single charge.5.Hold power or charging even when not in use for multiple days or weeks.6.Can be used with multiple string instruments.7.Has variable input volts ranging from 110v-220v.Cons.1.No cons found till date by me.These cons. are only for Indian consumers.1.A bit pricey as it is shipped form USA to India.2.Shipping charge is high.3.Takes more time to deliver.4.Warranty is a issue.

I use it for changing the strings in my acoustic guitar. The only issue is that strings got snapped once it is not controlled well. A little clumsy tool but powerful enough for restringing many guitars.