Here’s a trick from the Expert: When installing a replacement blade into the TapeTech Flat, EasyClean™ or Power Assist™ finishing boxes, (or any finishing boxes) if you pinch the blade between your thumb and fore finger about 2” from each end of the blade and bend it very slightly, the blade will seat more securely in the holder. To find the right replacement blades for your model of TapeTech finishing box, please reference the Schematics page for your box.