Replacement scales for the 91mm Swiss Army Knives. This scale set includes a slot for the tweezers and toothpick, but does not have a hole for the pin or pen if your existing knife includes these tools. You will need to remove your factory scales by carefully prying them off of the knife and snapping the new RGT scales in place. The factory scales will likely not be re-usable once pried off, so consider this a permanent modification. These scales have a firm snap, and will require firm pressure to properly attach to the factory pins, we recommend using a clamp for firm, even pressure. These do not require any type of epoxy or glue to stay in place once snapped on.