Heel-toe weighting

Heel-Toe Weighting
A type of club head design in which weight is positioned toward the heel and toe of the clubhead in an attempt to stabilize the clubhead (and produce straighter shots) on off-center impacts.
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HEEL-TOE WEIGHTING - A redistribution of the weight from a central
sweetspot to the heel and toe areas of the club to expand the effective hitting
area.
HOSEL - The neck of a club into which the shaft fits.

This can happen with some heel-toe weighting schemes, design oddities, or personal efforts to "tape" the putter or alter its swingweight or shaft dynamics. Robotic tests of face-balanced putters versus heel-toe weighted putters reveal this effect.

See also: Feel, Swing, Insert, Impact, Shaft