Rumberger Sleeves Option:Install it in the mouthpiece/barrel I'm purchasing this version is for 7

this version is for 7 Bb clarinets and 3 bass clarinets

and not the "blue box" reeds)

As I see it

and the feel of the switches

and it's a great value

Rumberger Sleeves Option:Install it in the mouthpiece/barrel I'm purchasing this version is for 7Rumberger Pickups are the freakin bomb. I have one and use it for every single show I put on. Now I also carry spare parts for these mics! Read on: Extra WP1X sleeve. If you have a WP 1X and don't need to do a quick swap, but want to use it on mouthpieces from two different instruments, you can easily remove the capsule from one mouthpiece and insert it in another. Not as quick as the "hot swap" above (since you have to unscrew the mic and pull it out