You will get the brand new UK Made main jet that is pictured. This is the correct main jet used from the 1950s to mid 1970s monoblock and concentric Amal carbs. All British makes used the amal carb Triumph Norton BSA

In the picture it does not say the size. It says Amal in the picture. You need to decide what size you need based on the title.

Contact us with any questions.