Cutler Hammer Breaker, fits between the buzz bars to provide 120/240V its the twin style and we will be happy to provide any pictures info or answer questions you might have.
Please feel free to reach out to us and God bless you!
WE have 
3x 20amp 
1x 15amp
As soon as the last is sold we will take the add down. please reach out to us with the voltage you require and we will confirm availability.
 God bless you and your family.