I used on a 20Ga sheet metal. A great tool and worth every penny. Job done quickly, easily and accurately. My only regret is I didn't buy it sooner. Much better than my Milwakee Nibbler.
Fein BLK 13CS Features & Specs
Rotating punch - increases the punch life by 30% against fixed punch systems
High cutting speed - 7½ ft/min
Tool-free change of punch, die and cutting direction
Cutting direction adjustable in steps of 45°
16 3/8 ft. Electric Power Cable
Power Source: Corded-electric
Batteries Required?: No
Batteries Included?: No
Build Material: Metal
Warranty Description: 1 Year Plus 2 Years if you register online http://www.fein.de/warranty/us/
Editor's Impressions Of The Fein BLK 13CS
Tool Motor Power
Cutting Accuracy
Value For Money
Build Quality
Feature Set
Fein BLK 13CS Final Thoughts
"Great Nibbler!"
Built for professionals and hobbyists. Used on my roof install, worked amazing. Not pricey, and a real time saver. Cuts 18 gauge stainless like cake. Thick or thin metal is no different.