I have used BWS-50SAR going on 8 hours. I have stripped everything from 500MCM to 12thhn stranded and solid. I also have stripped romex 12 gauge to 6 gauge. So far everything has worked great. I have 2 Gaylord boxes full of wire that I have stockpiled because of the lower pricing, I plan to sell it for bare bright this winter. I am an electrical contractor and use this for my winter pass time. I love the BWS-50SAR! Thank you BLUEDOG WIRE STRIPPERS!