The ornamental design for cap remover and tightener, as shown and described.
FIG. 1 is a front view of a cap remover and tightener showing my new design;
FIG. 2 is a top view thereof;
FIG. 3 is a bottom view thereof;
FIG. 4 is a right side view thereof, the left side being a mirror image thereof;
FIG. 5 is a rear view thereof;
FIG. 6 is a sectional view thereof, taken along the line 6-6 in FIG. 1; and,
FIG. 7 is a perspective view thereof.
The broken lines showing the face in FIG. 7 represent unclaimed lines on a claimed surface. The broken lines showing a ring and chain in FIG. 7 are included to show features that form no part of the claimed design.