The Kimberwick is one of the most popular types of Pelham Bits. It has one rein (split) or two-rein capability. The rein attached to the snaffle loop acts like a simple snaffle bit and is used for general riding and lateral movement while the lower rein (the one with a shank to magnify pressure) acts like a curb bit, adds chin and poll pressure and is used for stopping. There are several other bits that qualify as Pelhams.
While the Kimberwick is the one most often called a Pelham in its purest form and it has the shortest shanks, there are several other bits that also qualify. I have grouped them together in the “Shank Snaffle” (Curb Bits with Snaffle Mouths) category.
See Pelham Bits