Hinge Plate 1 x 2 Locking with 2 Fingers on End

This part has at least three known variants. Versions of the part with item number 44302 can be found with or without a groove on the end of the part opposite the hinge. Also, versions of the part with item number 44302 have nine teeth on the fingers whereas versions of the part with alternate item number 54657 have seven teeth on the fingers.