A curb bit is a type of bit used for riding horses that uses lever action. It includes the pelham bit and the Weymouth curb along with the traditional "curb bit" used mainly by Western riders.
A Western style curb bit with leather curb strap
An English style Weymouth curb
A decorative fixed shank on a western Salinas-style curb bit
Bit shanks, such as those on this spade bit, work as a lever
A snaffle bit is the most common type of bit used while riding horses. It consists of a mouthpiece and two rings. The mouthpieces may be jointed. A snaffle gives direct pressure on the horse's mouth a
Curb bit
…curb bit" used mainly by Western riders. Kimblewicks or "Kimberwickes" are modified curb bits, and a curb bit is used in a double bridle along with a bradoon. A curb bit is, in general, more severe than a basic snaffle bit, although there are several factors that are involved in determining a bit's severity…
A horse wearing a snaffle bit
This is a curb bit with a jointed mouthpiece, sometimes called a "cowboy snaffle". However, such bits are not snaffle bits because they have a shank and work with leverage