You might have seen this included in another post here on my blog at which time I probably said a further review was coming. Well here it is!
Excel’s Adjustable Duel Flex Cutter Set

If you are constantly cutting narrow strips of tape for masking and need them precisely the same each time, then you might want to pick up this set.
I found it very easy to use, I simply set the width between the blades by holding then to a steel ruler. Or using the model itself to set the spacing such as a stripe on an airliner using decal stock.
The adjustment knob has just the right amount of friction to turn easily yet hold the blades in a constant parallel. It was comfortable to hold and use with no worries about slipping from ones hand.
This tool has come in very useful since I acquired it. My homemade version has since been retired. I never did like having two knives taped together, it restricted width selection.
You can also use it as a light scriber to scribe parallel lines on plastic. I’ve even use it as caliper for transferring measurement…nothing better than a tool that multitasks!
Available at most hobby and craft stores stocking the Excel line of quality tools.


Clicking on either of the top two pictures brings up the left picture in both cases.
Alex