3B lightweight slide

[Basie1955]

On a 3B lightweight slide, is it made lighter by simply
leaving off the sleeves? Do these slides have thinner nickel silver?
Are they more ‘delicate’ or prone to damage from slight bumps?
How much lighter are they?

I appreciate responses from anyone who’s familiar
with the lightweights.

Big thanks
Basie

[brtnats]

They don’t have oversleeves. Not sure about the thickness.

[Basie1955]

They don’t have oversleeves. Not sure about the thickness.

Thanks- local music shop said yes, also lighter gauge
outer tubes.