Tom of Finland Screw You 肛門塞*

The tapered tip made insertion surprisingly smooth, and the threading sensation as I twisted it in was completely unlike any other toy I've tried. It stays put securely once fully seated, which is exactly what I wanted for longer wear.

The twisting motion is oddly satisfying, and once it's fully in, the fullness is incredible. It stays put better than I expected during use.

The twisting motion takes some getting used to, but the tapered tip makes the initial insertion much easier than I feared. It holds in place well once it's seated, and the size is definitely as advertised. Only gripe is that the thread pattern could be a bit smoother for quicker adjustment.