Swales tongue port,rubber, short sides

Vulcanite: A more comfortable alloy for horses than metal. Black rubber has the disadvantage that if a horse has a dry mouth, the bit gets hot due to friction and can therefore burn the tongue. If a horse produces enough saliva, this bit is a soft version of a metal bit.
 

Snaffle : Looks like the Pelham. Avoids any pressure on the neck. The only leverage bit without any neck's pressure.