US D304421 S
FIG. 1 is a side, top and front perspective view of an extension tube clip showing my new design;
FIG. 2 is a left side elevational view thereof, the side opposite being a mirror image;
FIGS. 3 and 4 are respectively top and bottom plan views thereof;
FIGS. 5 and 6 are respectively front and rear elevational views thereof; and
FIG. 7 is a sectional view of FIG. 3 showing more clearly internal details of the clip.