Variants of a mold are catalogued separately, so each one has its own sets and minifigs. Check these too if something you expect is missing here.

• 4518b Forklift Mast Wide 1 x 2 Hinge Plate Locking Alternate of this part
• 54669 Forklift Mast Wide 1 x 2 Hinge Plate Locking with Rubber Belt Holder [Reinforced] Mold of this part