The ornamental design for a gear for twin gearjuicer, as shown and described.
FIG. 1 is a top perspective view of a gear for twin gear juicer;
FIG. 2 is a bottom perspective view of the gear for twin gear juicer of FIG. 1;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a right side elevational view thereof; and,
FIG. 8 is a left side elevational view thereof.
The ornamental design which is claimed is shown in solid lines in the drawings. The portion depicted in broken lines forms no part of the claimed design.