替換套筒（吹氣大師）

The fit is snug enough that I don’t worry about it bunching up, which was my main issue with the old one. Went through the two-step swap while I was half-watching a show and it was done before the commercial break.

Slipping it on took about ten seconds once I followed the steps, and the snug fit feels like it locks in place better than my old one did. It's held up through a few uses now without any looseness, so I'm glad I grabbed a spare.

The fit is noticeably snugger than the original after a few months of use, which honestly made me wonder if I had the right one at first. But once it was seated over the outer casing it held firm with zero shifting. That simple removal-and-slide process in the description was exactly what I did and