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Free adjustment, arbitrary rotation
The ring can be rotated 360 degrees for support and folded 180 degrees for portability
One-handed operation is more firm
No longer worry about one-handed manipulation of the hand will slip, more practical
Free adjustment, arbitrary rotation
The ring can be rotated 360 degrees for support and folded 180 degrees for portability
One-handed operation is more firm
No longer worry about one-handed manipulation of the hand will slip, more practical