La Tromba (Neck) Tuning Slide Grease

Nope, not cork grease. It's metal grease! Sort of.

This, my friends, is slide grease for your bass clarinet neck's tuning slide! (or your sax neck, or your flute head joint, or anything that needs to slide metal-on-metal.) 

And that's the key: you ONLY need this grease if you have a bass clarinet neck from one of these manufacturers below, who's tuning slides are two metal pieces:

• Backun
• Selmer
• Uebel
• Kessler (or other Yamaha clones with a two-piece neck, like Jupiter)

Yes, that's right; if your bass clarinet says Buffet or Royal Global on it, the tuning slide in your neck actually has cork in it, so regular cork grease will do. 

But wait. Wait, wait, wait, wait, wait. I have a BaSeUeKessler bass clarinet. Why can't I just use cork grease like the BufOyal people? 

Well, you can, but it gets sticky pretty quickly (and makes a mess when you reinsert the slide). How about instead you use this stuff we've got here. It's made for flute head joints, which are basically the same metal-on-metal as your bass clarinet. And it leaves no residue. Because while bass clarinetists might tolerate residue, Flautists. Definitely. Do. Not.

By the way, if you have a one-piece neck that is inserted into a metal socket on your bass clarinet, this stuff works great for that, too.