Provided is a picture of an actual Retractable Wire Knife manufactured by McHugh Milieux. Notice the curvature of the tungsten wire. This curvature can be specified to fit your needs, anywhere from 1.5-3mm. The knives are made 1.5-2mm, if you need different email sean@mchughmilieux.com. All orders come with a 30 day money back guarantee.
Click images below to enlarge image.
M121 Wire Knife
1.5-2.0mm
$145.00