Yes it is a thick string, and no doubt it will not fit in the string groove on a bass that has been accomodating steel strings.
Eurosonic strings, since the onset, have been designed and constructed as an alternative to gut strings.
The light E string will give you a even lower tension string, but the diameter of the string has not been drastically reduced.
I posted a diameter comparison on
www.rockabillybass.com that may be helpfull for you.
Try this link,
http://www.rockabillybass.com/discus...tml?1066760785