Spikes on most golf shoes are replaceable, being attached using one of two common methods: a thread or a twist lock. Two sizes of thread are in common use, called a "large thread" and "small thread". There are two common locking systems: Q-LOK and Tri-LOK (also called "Fast Twist"). The locking systems use a plastic thread which takes only about a half turn to lock.
Alternately, the rules allow for a mound of sand to be used for the same function, also only on the first shot. Before the invention of the wooden spike tee, this was the only accepted method of lifting the ball for the initial shot. This is rarely done in modern times, as a tee is easier to place, hit from, and recover, but some courses prohibit the use of tees either for traditional reasons, or because a swing that hits the tee will drive it into or rip it out of the ground, resulting in damage to the turf of the tee-box. Tees also create litter if discarded incorrectly when broken.
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Stroke counters help a player keep track of the number of strokes he or she has made during a hole, an entire round, or both. The simplest devices are strings of beads, thumbwheels or "clickers" that a player advances by one after each stroke and provide a total for the player to write on their scorecard after each hole; newer variations have various degrees of computational power added and can keep score for multiple holes, total scores, and keep track of over/under par statistics. These more advanced counters are generally referred to as "electronic scorecards". Counters by themselves are allowed under strict rules, but some multi-functional devices incorporate additional banned features like rangefinders or wind gauges, and as such the entire device becomes illegal.