I bought these strings to use on my Fender Mustang PJ bass and they are the perfect length for it.
Browsing a variety of guitar string stores, I was having trouble finding a short scale set in the 45-105 gauge and noticed Pyramid did the very set I was looking for while I was buying a set of Pyramid Gold flatwound strings for another bass.
On a short scale bass, these are classed as a heavy gauge, but they really don't feel it - very comfortable under the fingers and the tension feels just right - not tight, but not floppy either.
Soundwise, the string response was even across the strings and being nickel strings, they aren't as harsh sounding as steel strings can sound when new. That's not to say that the Pyramid strings don't sound bright - they do, but that's not at the expense of warmth and evenness of tone.
As mentioned, I was specifically looking for this gauge as I find that the G strong on a short scale sounds a lot tubbier with a heavier string and this is carried over to the lower strings - the E feels great!
To summarise, if you have a short scale bass and want a bit more to your sound, you can't go wrong with these strings! Highly recommended and a bargain at the price!