Clips
Clips are used to take the strain off of the horseshoe nails. They also can prevent or lessen the chance of the shoe slipping on the hoof, causing the nails to loosen prematurely.
Toe clips are generally seen on the front shoes, but will also be seen occasionally on the hind shoes. Toe clips are used to prevent the shoe from slipping backwards on the hoof.
Side/quarter clips are seen on both front and hind shoes, they are used to help prevent side to side slippage of the shoe on the hoof.

Rocker toe
In this modification, the ground surface of the toe is bent upwards from the inside web of the shoe. This modification can help give the hoof an easy way to come up off of the ground (breakover). Rocker toes could be beneficial to horses that tend to stumble or drag their toes due to lameness or laziness. Rocker toed shoes relieve the stress of breaking over at the toe.

Rolled toe
This modification is a very mild form of the rocker toed shoe, and can be used for the same  This shoe is modified by placing a rolled area on the ground surface of the shoe, at the toe. It is generally forged into the shoe by your farrier, but a grinder will work very well too. A rolled toed shoe can enhance animation on show horses.

Square toe
A square toed shoe is generally used on the hind to help a horse with different gait faults like forging, interfering, stumbling due to lameness or laziness. This shoe is also used to help a horse break over in the middle of his hoof. Most commonly used on cow-hocked or base narrow conformation.

Minnesota Farriers Association
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