FIG. 1 is a front perspective view of a combined roller skate footplate and fastening thereof showing my new design;

FIG. 2 is a front perspective view of a modified embodiment of the design shown in FIG. 1;

FIG. 3 is a right side elevational view of the design shown in FIG. 1;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a top plan view thereof showing the design in an extended position; and,

FIG. 8 is a bottom plan view thereof.