Comments: I liked the rounder and larger edges of the KPS88 butt cap compared to the other PS rackets, and since this butt cap looks sort of rounder in the pictures, I got it in the hopes of recreating the KPS88 end cap feel on my PS85. I can say that it is definitely rounder and gives a slightly larger feel compared to both the older n-Code style caps or the newer BLX caps. The KPS88's cap still feels just a tad larger and rounder however. It also has to do with how the grip is wrapped, depending on how much overhang over the edge and whether you start closer or farther from the edge. The trap door is also very useful for putting weights at the end.
From: Andrew, 4/12

Comments: Good, rounder butt cap. If you don't like the SixOne butt caps, this is a good alternative and still gives you a trap door. I put it on a KPS 88 two years ago and it has never felt uncomfortable. A good buy if you're looking for a new butt cap for a Wilson racquet. As far as I know, it won't fit other brands of racquet.
From: Rey, 1/12

Comments: How "round" is it on its edges. I'm tryng to fing a cap with low friction on my palm. Would it fit other racquets ... Like my head racquets?
From: WALTER, FINLAND. 9/10
(Walter, there are no hard edges. It feels smooth like any Wilson butt cap. We wouldn't recommend forcing it to fit other racquet handle shapes. -- TW Staff)

Comments: This butt cap with a trap door is really helpful for those of us who want to add weight in the handle w/o having to take the grip and butt cap off. It's also a nice feature just in case a piece of the frame comes loose inside the frame and you can let it out instead of having it rattle around inside. Good quality, too!
From: James, Beaverton, OR, USA, 10/08