Schaller strap locks are std on Euro N/T and US basses also. ( I believe they still are) If that tells you anything.
Dunlop makes strap locks also , they look like quality pieces. I havent had any experience with them except for removing them from a friends strap which he needed for another bass that didn't have them. I don't have faith in the design though, it looks to me as if they could fail easily.
Dunlop makes strap locks also , they look like quality pieces. I havent had any experience with them except for removing them from a friends strap which he needed for another bass that didn't have them. I don't have faith in the design though, it looks to me as if they could fail easily.

