An ad for these popped up so tho't I try to learn more. For $40 you are getting a hacksaw blade inset in a handle. Where I live a hacksaw blade costs just over a dollar or a pkg of 10 for $5. I started using a hacksaw blade years ago. My hubby, being a welder always had some used ones for me which still worked great. They are thin and flexible-just hold with thumb and forefinger on each hand and watch the hair come out.