Centaur Blue Steel Jointed Tom Thumb Pelham BitWe love this Centaur Blue Steel Jointed Tom Thumb Pelham Bit because it combines the action of a snaffle bit with a curb bit. The perfect bit if you have a horse that leans on the bit or is hard to stop. This bit requires an expert hand. Pelham bit Our Blue Steel bits are made of a technologically advanced version of Black Steel (traditional Sweet Iron) Blue Steel oxidizes faster and easier compared to Black Steel Will oxidize when in contact with air