This chenille cutter from OLFA is a premium class tool that provides greater versatility when creating chenille pieces than other similar cutters. There are four width sizes to choose from, which should correspond to the stitching width on the piece:
S = 5 - 6mm
M = 7 - 8mm
L = 9 - 10mm
LL = 11 - 12mm
The extra sharp blade is only exposed in one size channel at a time. Turn the dial in the direction of the red arrow to change the size, or turn it left to expose a new sharp blade section. Once the blade is used completely simply replace it with another ø60 mm blade.
Take a look: OLFA Chenille Cutter