The ornamental design for a hub and lever, as shown and described.
FIG. 1 is a front perspective view of a hub and lever showing our new design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof;
FIG. 6 is a right side view thereof; and,
FIG. 7 is a left side view thereof.
The broken line showing of the small horizontal gap in FIGS. 1-3, 6 and 7 and of the unshaded circular region in FIG. 5 represents an unclaimed area and forms no part of the claimed design.