I wanted a classical, nylon-core strung, contrabass for ensemble work. I had an old standard-scale Alhambra 8C that I didn't use any more. I bought these contrabass strings for it and they work fine. I am very pleased.
*They are really intended for a purpose made longer scale length classical contrabass, but they give good results on my 65cm scale guitar.
* They do have tapered ends for the tie-block/bridge and the tuning posts.
* I didn't need to enlarge the tie-block or tuning-post holes.
* I did need to adjust the 5th and 6th string grooves in the nut.
* The 6th string doesn't resonate as well as on a purpose built contrabass, but it is still pretty good.
* If you are experienced at guitar maintenance, you can do this conversion yourself.