Variation in Bit Construction

Mouthpiece variations common to Snaffles and Curbs
Bits are constructed to vary the location, intensity, and type of rein pressure. Hackamores vary in the flexibility and size of the bosal, or noseband, and the amount of release, or open space between the noseband and the horse's nose and chin in the absence of rein pressure. Snaffles vary in the type of material, shape, diameter, texture, and hinges in the mouthpiece, the attachment of the mouthpiece to the rings, and the size and shape of the rings. Curb bits share similar variations, but they are more involved. The attachment, length, and shape of the shanks, the angle of the mouthpiece in relation to the shanks, the amount of release allowed by the curb strap, and the shape and angle of the port and bars of the mouthpiece affect the amount and distribution of rein pressure from curb bits.