The ornamental design for a detachableracquetweight, as shown and described.
FIG. 1 is a perspective view of a detachable racquet weight.
FIG. 2 is a top view of the detachable racquet weight.
FIG. 3 is a bottom view of the detachable racquet weight.
FIG. 4 is a front view of the detachable racquet weight.
FIG. 5 is a rear view of the detachable racquet weight.
FIG. 6 is a left side view of the detachable racquet weight.
FIG. 7 is a right side view of the detachable racquet weight; and,
FIG. 8 is a reduced perspective view thereof; the broken line showing of the racquet is included for the purpose of illustrating and forms no part of the claimed design.