FIG. 1 is a front perspective view of a mop showing our new design for a portion of a mop;

FIG. 2 is an enlarged front view of the portion of a mop,

FIG. 3 is an enlarged left side view thereof; and,

FIG. 4 is an enlarged top view thereof.

The broken line showings in FIGS. 1–4 are for illustrative purposes only and form no part of the claimed design. The S-shaped broken line showings toward the top of FIGS. 2 and 3 between the solid line showings represent unclaimed boundaries of the claimed design.