Extendabone is a slide extension handle. Its simple and ergonomic design let everyone play trombone!


Clip it on and play the way you normally do.

Extendabone provides the extra inches when you need them and gets out of the way when you don't.

Everyone can reach 6th and 7th position. Everyone can play in tune.

No one has to buy an expensive instrument before they can afford it.

Extendabone is an easy and inexpensive solution that lets everyone play trombone from day one.


Clip onto the handslide with the logo facing out. If it is too loose, attach the foam inside the clip.
It should pivot but not slide up and down.


Hold the handle just like the trombone slide. The fat part of the handle fits in your palm with a groove for your thumb.


Hold Extendabone in line with the slide handle until you need the extra length to reach far positions.


Fold it back parallel with the stockings when you don't need it.

We all need a little help sometimes

Extendabone Graphic

Whether it’s learning to ride a bike or reaching something from a high shelf, it’s normal to need a little help as we grow and learn a new skill. The trombone isn’t any different. Learning to tame this beast of an instrument is a struggle. The smaller size of young students doesn’t need to make it harder. Just as most children grow out of using a stepstool to brush their teeth or wash their hands, most students will grow out of using Extendabone. But for those of us who still use a stepstool for the highest shelves in the kitchen, it’s a good thing Extendabone is for players of all ages!

Why a slide extension handle?

Because I am a professional trombonist who has performed all around the world, and I still need one!

Like most beginners, I could barely reach 6thposition and not reach 7that all when I started. Unlike the majority of kids, my parents were able to buy me a trombone with an F attachment, so this wasn’t really a problem until I got to Juilliard.

At Juilliard, I encountered the first piece that was impossible to play without using 7thposition, Stravinsky’s Pulcinella Suite. Despite my teacher, Joe Alessi, teaching me every possible trick, I still could not reach 7thposition enough to play in tune. Joe supposed that this was a common enough problem that there must be some kind of slide extension handle on the market.

For Everyone

I made Extendabone because it is important to me that this product is available for anyone who needs it. This is something that players of any age and ability can benefit from, myself included.

Extendabone is proudly manufactured and packaged in the USA.