Replacement Cutting Blades contains two cutting blades to work with T-050 Paper Trimmer.

How to Change Blade Carriage:

Slide the blade carriage down the cutting rail to the blade removal groove. When nearing the groove, begin pulling the blade carriage up at a 45-degree angle and continue to slide down until the carriage comes free.
Set the new blade carriage into the groove at a 45-degree angle. Push the carriage down as you slide it up the cutting rail to fully seat the carriage in place.