Fellow Opus（第一代）用風箱

I've had constant retention issues from the start and not unusual to see 6-7g retention at a grind setting of 5. Fellow seem to think this is acceptable, I don't!

This bellow solves this issue to a large degree. I'm not getting results that I consider more than acceptable ( 0.2g or so) I initially picked up a cheaper silicone and is was terrible.

This by contrast is a perfect fit and looks like it was always meant to be part of the grinder. Kudos for the 3d printing design and work as it's not an easy thing to design and get right.

I'm super impressed and if anyone is on the fence about getting one then I'd urge you to look no further.

This is the one.

Works well. Bit more air would be nice also.

It just solves the problem of not getting all the ground coffee out of the grinder. Perfect solution. Thank you!

Nice seller! The bellow solved 100% the retention issue! Totally recommend!

The introvert bellows helps stay on top of keeping the Opus grinder clean. Seamlessly fits in to look like it’s part of the original design, too.