The mouthpiece of the Smooth Dogbone wraps the tongue with applied pressure. Good for lateral pull and collection and may be used with a training fork or martingale for increased control of the poll and nose. The Snaffle mouthpiece is widely used for all types of riding and training activities. The Floating Spade mouthpiece wraps over the tongue with applied pressure. This is a great bit to introduce a horse to palate pressure as you transition to ported bits and taller corrections.The Correction mouthpiece wraps the mouth, applying increased pressure to the sides of the tongue. It is commonly used on finished, well broke horses. Good for collection and stopping.