KIIROO® Onyx+™ Replacement Sleeve - Single Pack

The replacement sleeve slid right into my old casing with no fuss, and the internal texture feels just as good as the original did on day one. That squeeze on the forward thrust is the whole reason I keep coming back to this one.

The internal ridges catch just right on the thrust, that squeeze is no joke. I was worried a replacement wouldn't match the original fit, but this one slides on snug and holds up during use.

The fit is snug from the first push, and that internal ribbing really grips you on the way back out. Lasted through a few solid sessions before I swapped it for a fresh one, which is exactly what I needed.