Set of S43 'solo' Thomastik Spirocore 4/4 size Double Bass strings.

Thomastik Spirocores are the No.1 choice jazz bassists and have been a popular string for many years.

They have great sustain and a big sound good for many styles, but remain a jazz favorite. You'll also find them on lots of general use basses, for bluegrass, blues, and other styles where that big sound and sustain are prized. They are certainly also used by many fine arco players!

These strings are the 'solo' Tuning Set, which is a set for tuning one step higher than standard E-A-D-G tuning.  They are tuned, from low to high, as F#-B-E-A.

This is commonly used by arco players who are doing solo repertoire; however, many folks buy solo sets to tune to "standard" tuning to create a sort of "extra light" tension option.