In 1981, Schaller developed and got the patent for a totally new category of product, which revolutionized the connection between guitar and strap.  With its unique design and functionality, Schaller has been setting the standard in strap locks for decades.

The new S-Locks, S for save, S for silent and S for Schaller strap locks!  These new revolutionary S-Locks are silent.

Includes: 2 x buttons size S (3.5 x 18 mm) - small size & felt washers.

Features

• Great addon for those who want to use one strap for multiple guitars
• New and unique one-piece construction, easy to install via 3 mm (1/8") Allen key
• Special 3.5 mm wood thread in S-Lock size S for maximum grip
• Hardest steel for maximum wear resistance and safety
• Made in Germany

https://youtu.be/IfabI5K4xN8

Item shown: Schaller S-Locks Replacement Buttons - Small
Model #: SCHBUTTON-S