Lauri Guard 10x25x1 Fillet
Here is a guard for the Lauri Fillet 130 Blade. - It can also be used on the Lauri Fillet 160 blade if the slot in elongated.
10x25x1-Fillet - About .400 wide 1in tall.
It is curved in like a Ferrule so it measures .126 from back to front.
The slot is about .500 in long and .070 wide.
Some use this on top of a bolster such as the 16x24x3 Fillet.