The ornamental design for a pair of lockingcollars, as shown and described.
FIG. 1 is a front perspective view of a pair of locking collars showing our new design;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a side elevation view of the left locking collar of FIG. 1;
FIG. 4 is a side elevation view of the left locking collar of FIG. 1, rotated ninety degrees;
FIG. 5 is a top plan view of the locking collar of FIG. 3;
FIG. 6 is a bottom plan view of the locking collar of FIG. 3;
FIG. 7 is a side elevation view of the right locking collar of FIG. 1;
FIG. 8 is a side elevation view of the right locking collar of FIG. 1, rotated ninety degrees;
FIG. 9 is a top plan view of the locking collar of FIG. 7; and,
FIG. 10 is a bottom plan view of the locking collar of FIG. 7.
The broken lines shown represent unclaimed subject matter and form no part of the claim. Where broken lines abutt a claimed surface it is understood that those broken lines represent an unclaimed boundary between claimed and unclaimed surfaces. None of the broken lines form any part of the claimed design.