The ornamental design for a j-trimming, as shown and described.
FIG. 1 is a front perspective view of a j-trimming, showing my new design;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is an enlarged left side elevation view thereof, showing the j-trimming in use.
The evenly-sized dash-dash broken lines showing other trimming in FIG. 8 depicts environmental subject matter that forms no part of the claimed design, while the remaining evenly-sized dash-dash broken lines shown in the drawings depict portions of the j-trimming that form no part of the claimed design, while the broken lines consisting of unevenly-sized dash-dot-dash lines in the drawings depict the boundary of the claimed invention and it is understood that the claim extends to the boundary that forms no part of the claimed design.