Part of a straight blade , razor blade holder .
Should be a clamp plate to hold the blade and a knurled screw to hold both pieces and the razor blade together .
Do you need a picture of mine; to see if you can track down the missing parts ?
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.