Five signs you need a new driver.
The amount the sha bends in the toe direction during the downswing. Misses high on the face suggest too much sha droop.
The part of the club at the top end of the sha or grip.
Adding weight to the grip end of the club to provide a counterbalancing effect, primarily popular in putters.
The amount of angle from the toe to the heel. The more angle, the greater the draw bias.
Cutting the tip end of a sha makes it play slightly stiffer than intended, lowering spin rate and ball flight, too.