There was a time when if you wanted more solder-free right-angled jacks you had to by the complete solder-free kit with the cable, stripper and screw driver. Sad times.
Luckily these days are long gone and now you can use this pack to build up your own custom length patch cables with surplus cable from the kit. This is good and adds even more value to the kit product.
What could be better? Thomann could also market the corresponding coax cable by the meter to supplement the basic kit.
back to the jack plugs: they have a low form factor, appear fairly rugged , aren't microphonic and do a great job together with the afore-mentioned cable, (see the solder-free kit reviews for more).
I recommend buying these to supplement the kit - who knows when you might need to make up another cable or two?