Schaller Security Strap Lock Set
The Original! Ingenious design, superb materials and outstanding quality, for decades these have been most popular strap lock system for guitarists and bassists.
These Security Locks can be used on acoustic guitars as well. Simply screw the Security Lock pin into tailblock and heel whilst avoiding screwing into the unreinforced part of the sides.
You can view the technical drawing HERE
You can view the rest of the Schaller range of products HERE